Chapter 9: The Engagement
Keijutsu hummed as he sat back in his chair. "Would you remind me as to the function of these Rating Games again?" he asked. He and the rest of the Student Council were seated before several large television screens, each of which showing nothing but static. The other members of the peerage were waiting patiently for the Rating Game to begin, but until then they could do other things.
Like trying to use their gaze to burn a hole into the back of someone's head, which Saji was trying to do to him. It seemed he was still on the Pawn's bad side.
Sona sighed. "The Rating Game is a form of competition between two Devils that have peerages. It involves the peerages combating against each other in a simulated environment. The Kings try to outmaneuver each other, similar to two chess players, and it ends when the King for one side either surrenders or is unable to compete any further and is 'retired' from the game. And for the Devils involved, it is one of the fastest ways possible to gain notoriety and social standing in the Underworld," she explained.
Keijutsu nodded. "So that's what we'll be watching today? A faux battle between Rias-san and another Devil?"
"Yes, but there's more to this case. Rias's opponent is a man she's currently engaged to marry, Riser Phenex. But she doesn't wish to marry him, and Riser has agreed to a Rating Game where, if he loses, Rias will no longer be bound by their marriage contract," Sona said.
Keijutsu looked at her for a moment, before smiling slightly. "Just like how you got out of your marriage contract by thrashing your fiancé at chess, huh?"
Sona didn't look at him, but he could tell that she was also amused by the comparison. "Very similar, yes. And it will be my job to oversee the Rating Game from here to ensure that there is no foul play involved."
It was at that moment that the static on the screens vanished, and were replaced by images of… Kuoh Academy?
Keijutsu blinked, but before he could comment on why the simulated environment looked like their school, a voice spoke out. "May I have your attention, please? This is Grayfia Lucifuge, a servant of the House of Gremory. I will serve as the announcer and referee for this Rating Game, which I welcome you all to enjoy."
"The environment for this event was made after taking suggestions from both Rias Gremory and Riser Phenex, and had been made into a replica of Kuoh Academy, an educational institution in the human world that Rias-sama attends. The designated territories for each team will be as follows: Rias-sama will have the Occult Research Clubroom in the Old Schoolhouse, while Rias-sama will have the principal's office in the New Schoolhouse."
"And now, without further delay, let the Rating Game begin. Good luck to you all."
Sona looked over at Tsubaki. "Show me Riser," she ordered, and the glasses-wearing Queen did just that. One of the screens switched to a feed from the principal's office, giving Keijutsu and their first look at Rias's opponent.
As far as appearances went, Riser Phenex could be worse. He looked relatively young, only in his mid-20's, if Keijutsu had to guess. He was tall and had tanned skin that went well with his short blonde hair and dark blue eyes. And he was wearing a burgundy blazer with matching pants, a white dress shirt that was partially unbuttoned, and black dress shoes. All in all, he fit the stereotypical 'rich bad boy' image.
An image that was not helped by them hearing Riser say "Show my fiancé and her group of weaklings no mercy. Shatter their pride, crush their sprits, and make them submit to us. If we don't, this whole show is pointless."
"He's a real piece of work, huh?" Saji said, much to their agreement of everyone else.
From then on, there was little talk as the Rating Game started to get going. Keijutsu pondered over what Rias would do, since she was at a disadvantage in terms of both numbers and experience. Her first move, as it turned out, was to fortify their home base by laying a series of magical traps and illusions in the woods surrounding them. A sound strategy, he had to admit.
Riser, meanwhile, was taking full advantage of his greater number of servants to break them up into groups and have each one sent to various key points around the campus. He set a group up near the track field, at the athletics club, and sent a smaller party to try and probe Rias's defenses.
"Do you think Rias will use an indirect assault on Riser?" Tsubasa asked.
Sona nodded. "If she wants to push forward and keep her territory secure, she'll have no choice. The question is where she's going to send them first, and whether or not Riser has sent anyone there as well."
Keijutsu hummed. "If I had to make a decision, I'd say to simply move right across the school grounds," he said.
Both Sona and Tsubaki looked at him like he was insane. "Why would you suggest something like that? If they do, they'll be right out in the open, and could be surrounded with nothing to use as cover," Tsubaki pointed out.
Keijutsu nodded, and said "True, it would be the most foolish choice to take. Just charging straight in poses all kinds of dangers, but it has one key element: Riser would never expect it. If he's smart enough, he'll be expecting Riser to use deception just like we are."
Momo gasped, and her eyes widened. Picking up where he left off, she said "In fact, he's already spread out his forces in a way that anticipates that. But if Rias were to use the most direct method available, he'd have to recall his forces before he could respond to her properly, giving Rias precious time to dig deep."
"Exactly. If this is supposed to be a simulation of warfare, then you have to follow the rules of war. And one of the biggest rules is to always act contrary to the way your opponent perceives you to," Keijutsu said, sitting back.
Despite that, it turned out that Rias had something alike but different in mind. Rather than charge straight in, she chose to send Issei and Koneko to capture the gymnasium. It was a relatively smart move, as the gym's location in the center of the campus made it a good staging point for future assaults.
But Riser was thinking the same thing, and had sent his own Rook along with three Pawns. And while that fight was going on, he had another group, one made solely out of a trio of Pawns, try and navigate through the woods until they were close enough to be promoted.
The next part of the Rating Game consisted mostly of the battle at the gym. The two opposing Rooks duked it out while Issei avoided being sliced to pieces by the others. And in this case, that expression was literal, since two of them were carrying chainsaws.
However, in turned out that Issei was much more skilled than they had expected. He was able to avoid getting injured by all three of the Pawns, save for one time when he got blasted into a wall. He also landed glancing blows on each of them, going so far as the break the blue-haired girl's staff in half when she tried to hit him with a burst of wind magic.
"Not bad," Reya commented.
But she swiftly found herself regretting complimenting him when they heard Issei call "And now, it's time… to get naked!" and he snapped his fingers. A small seal appeared over the spots where Issei had made contact with each girl, and then their entire outfits began glowing.
Keijutsu's eyes widened. "I knew he was a pervert, but did he really invent a move to-"
Then the girls' outfits literally burst into shreds, eliciting screams of surprise and horror from all three of them.
"…He did," Keijutsu finished, hanging his head.
On screen, Issei laughed and stuck a pose. "Ha! You girls like that? Ever since I was a kid, I've always undressed girls with my eyes, but now all I have to do is wish it and it happens for real! Try and mess with me, and you can kiss your clothes goodbye!" he boasted.
Tsubaki removed her glasses in order for her to pinch the bridge of her nose. "That boy… is a freak," she stated.
Sona's expression was just as deadpan as everyone else's, but she said, "You never know; maybe this 'Dress Break' thing will work. After all, nothing stops a girl like having her clothes magically ripped off."
Then Issei went into a long-winded speech about how he couldn't have perfected the spell without the help of Asia, and that it took countless tries on many outfits in order for him to get it right. Keijutsu avoided the temptation to join Saji in smashing his head against the table, even though it was sorely tempting.
Thankfully, once the speech was over, they were quick to leave. They didn't even finish the girls off, leaving them there. Just as Keijutsu was about to question the wisdom of such a move, they saw Akeno conjure a massive bolt of lightning that completely obliterated the entire building.
"Three of Riser-sama's Pawns and one of Riser-sama's Rooks have just been retired," Grayfia announced.
Ruruko leaned forward. "Wait a minute. The whole bit of trying to capture the gym was a trap?" she asked.
"It looks like that's the case. She had Issei and Koneko act as bait to draw part of Riser's forces in, and then kept them there long enough for Akeno to blow the whole thing apart. With all four girls gone, Riser's lost a whole quarter of his forces," Tomoe said.
"Yeah, that's cool. But now that Rias has taken the offensive, won't Riser have to retaliate?" Saji asked, lifting his head up.
"Indeed, he will. And while Rias did just take a chunk out of his forces, they're still outnumbered two-to-one. This could get ugly very quickly," Sona said.
And get ugly it did. Only a few minutes after the gym was destroyed, Koneko and Issei were attacked on their way to the athletics' club. They never saw it coming. One minute they were just walking, then Koneko was enveloped in an orange magic circle and the ground underneath her exploded.
The fault quickly was realized to lie with Riser's Queen, a busty woman who could apparently use her spells to create magical explosions. Koneko had already been somewhat tired from fighting Xuelan, and taking the blast at point-blank range had been enough to completely finish her.
"Rias-sama's Rook has been retired."
Ignoring Grayfia's announcement, Issei had been about to attack Yubelluna without a second thought when Akeno intervened. She sent Issei away to continue trying to reach Kiba, while she attacked Yubelluna in a Queen versus Queen spell-fight.
"Now would be the proper time to retreat, don't you think?" Keijutsu thought aloud.
"Probably. Rias's plan had been built with having all of her pieces in mind and would work before Riser sent his Queen out. But now that plan has been subverted, so she should be falling back to come up with a new one. Instead, it looks like she's going to keep pushing," Sona said.
They heard that the three Pawns Riser had sent through the woods had been defeated, bringing the numbers down to nine against five. Not quite two-on-one, but still not looking good. Then Issei met up with Kiba and the two of them switched direction, heading towards the track field. Rias also quickly vacated the Old Schoolhouse with Asia in tow, stealthily moving across the school grounds.
'A sneak attack? As long as those two can draw all of Riser's servants to them, that might work. But if even one doesn't fall for it and realizes that Rias's home base in unguarded, they're in real trouble,' Keijutsu thought.
To his immense surprise, Riser did actually fall for it, and sent all of his other Pieces to the track field. The first one to arrive was, unsurprisingly, a Knight, one whom Kiba quickly engaged in combat. But that left Issei alone against another Knight, the other Rook, two Pawns and two Bishops.
Not that either of the Bishops, one them being a younger girl with blonde hair in drill-like pigtails and a pink dress, had any intention of participating. Apparently, she was Riser's younger sister, Ravel Phenex, and was a part of his peerage simply to avoid being bored. And the other Bishop, Mihae, was a pacifist that would only join in if there was a real need for it. So, really, it only four against one instead of six against one.
But rather than attack Issei all at once and overwhelm him, which Keijutsu considered to be the wiser move, they let the Isabella the Rook attack Issei by herself at the start. That gave him the time needed to use his Boosted Gear two more times, for a total of six boosts. Which mean that his power—Keijutsu did a quick calculation in his head—was sixty-four times as much as what it had been when the Rating Game started. And that in turn gave him the strength needed to defeat Isabella.
Meanwhile, Rias and Asia had managed to infiltrate the New Schoolhouse, only to find Riser waiting for them. They retreated, but he followed them out onto the roof of the building. "So, you knew that I was planning this?" they heard Rias asked.
Riser smirked. "A virgin fighter like you should never underestimate someone as experienced as I," he told her, making Keijutsu roll his eyes at the blonde's blatant vulgarity. He and Rias started shooting blasts of fire and Power of Destruction at each other, causing large explosions and more than a little damage to their surroundings.
At the same time, Kiba was still fighting Karlamine, and the others were still fighting Issei. Only now did they start attacking together, first with a two-sided assault by the cat-girls Ni and Li, and then Siris tried to cleave him in two with her massive sword. He managed to hold his own long enough to boost twice more. 'Now his strength is what is was initially, multiplied by 256. I'll admit, that Boosted Gear is something to be feared," Keijutsu thought.
And then Issei revealed something else he hadn't known about the Sacred Gear—it could transfer the immense power it collected to other people and attacks. He did just that by transferring all his power to Kiba's Sword Birth Sacred Gear, causing the entire track field to be reshaped as countless different types of swords burst from the ground.
Ravel was able to avoid it just in time by creating a pair of wings made of fire and taking to the air. But the others didn't have that ability and was skewered several times over by the many blades. Karlamine managed to hold for just a few seconds, long enough to mutter "I don't believe this…" before she faded away.
"Two of Riser-sama's Pawns, two of Riser-sama's Knights and one of Riser-sama's Bishops have been retired," Grayfia declared.
Issei cheered for their victory. Things were starting to look back up for them.
Only to have that victory snatched away seconds later. A large explosion occurred just away from the track field, and a column of smoke rose into the air. From that smoke emerged Akeno, who fell to the ground and vanished just before she could crash-land. Another explosion went off just behind Issei a few seconds later, taking out Kiba as well.
"Rias-sama's Queen and Rias-sama's Knight have been retired."
And from there, it all went downhill. Issei was able to make it to the New Schoolhouse and promote himself to Queen, evening things out in terms who had had what pieces.
But he was already near his limit, as was Rias. And with those Phoenix Tears that Riser's peerage were carrying, Yubelluna was as good as new. The busty bomber was able to incapacitate Asia, and then Issei finally reached the end of his rope when the Boosted Gear activated for the tenth time, making his strength over a thousand times greater… and then immediately deactivated, taking all of his strength with it.
Still, Issei refused to stop fighting. Fed up with his tenacity, Riser started pummeling Issei faster than he could defend himself, yelling "You don't know when to quit!" Just before Riser could fry the brown-haired pervert alive and potentially kill him, Rias stopped him and tearfully surrendered, pleading with the blonde to let Issei go.
And thus, the Rating Game ended.
A few days later…
Following the result of the Rating Game, the Houses of Gremory and Phenex had chosen to host an engagement party to celebrate the union of their Houses. Devils of all kinds had been invited to attend, and it was shaping up to be one of the biggest events in the Underworld in a long time.
As the heiress to a prominent House as well, Sona had been invited to the party, and her peerage, by extension, allowed to come as well.
'This is one of the few times I will ever allow myself to be in a suit,' Keijutsu thought sourly. He was currently wearing a black tuxedo jacket with a light gray button-up undershirt, blank pants, black dress shoes, and a purple tie that was the same color as his eyes.
All around him, he could feel the looks from a couple of other devils as they appreciated how he looked, as well as the other members of the Student Council. Several of the girls were in nice, form-fitting dresses that looked like they had come straight from top models, a sign of just how much they were worth. While Saji was dressed in a similar tuxedo to him, though his was only black and white.
Said Pawn was being cornered by Ruruko and Momo, who were trying to get his opinion on their dresses and how he felt they looked. The poor blonde looked like he was ready to faint from how many times either of them pressed against him, whispering sweet nothing in his ears and not hiding their attraction to him at all.
Deciding to leave Saji to his fortunate fate, Keijutsu looked around the room. Music from an unseen source drifted through the air, and almost everyone had a glass in their hand while talking politely with their companions. Off to one corner, Ravel was boasting about the results of the game to several guests, doing a rather fine job of buttering up her family's skill while the rest of Riser's peerage stood around her.
To be frank, everything about the scene—the pageantry, the feigned politeness, all of it—annoyed him. Politics in general was something he tried to avoid, much preferring the honest and true setting of the laboratory. But regardless of his personal preferences, he knew that not having one of her servants appear would have looked bad for Sona. So, he swallowed his pride, and stayed.
"She's delightful, isn't she?" he heard a voice say, and turned around. To his surprise, it was Kiba who had spoken up, and was standing with Akeno and Koneko.
The Knight smiled. "You're Keijutsu, Sona's newest servant, right? It's a pleasure to meet you," he said, extending his hand.
After a moment's hesitation—that smile looked too wide to be real—Keijutsu shook his hand. "The pleasure is shared, Yuuto-san. And yes, it would seem that Riser's sister does have quite a mouth on her," he replied.
"Well said," he heard another voice say, and looked behind him again. And froze stiff.
It was Sona, but that wasn't what had caught him off guard. What caught him off guard was that she was wearing a dress. It was blue in color and consisted first of a skirt that reached her knees. Then there was a white undershirt on top, over which was a gossamer blue shawl held up in the front by a knot that used a similar material but of a lighter blue than the rest. The shawl and undershirt left her shoulders and part of her chest and back uncovered, showing only the slightest amount of cleavage. A small necklace with an oval-shaped jewel that matched her eye color completed the outfit.
All in all, she looked… absolutely stunning.
Keijutsu simply stared for a moment, taking in the view before him while his mind attempted to restart itself. He had acknowledged that Sona's appearance was attractive from the first time they met, but until now he had always placed that in the back of his mind in favor of focusing on her words and mind. But now, for all his intelligence, he could do nothing but gape like a fish at the sight of her.
Thankfully, Kiba spoke for him, saving the Artificer from making a fool of himself without even realizing it. "Sona-san, it's good to see you," he said.
Sona looked towards Ravel. "It is a shame; I do wish that Rias had won. And despite all the holes in her strategy and the gambles she took, she put up a valiant effort. Especially for it being her first time," she said.
Akeno smiled demurely, hands folded in front of her kimono. "Thanks for the support. But this fight is far from over," she declared.
When Sona gave them a questioning look, Kiba said "Oh, we just mean that we'll get another shot at them soon enough. And this time, we'll be ready for any tricks they come up with."
Koneko added "Yeah. Screw those douchebags," and took a sip of her drink.
Sona nodded, and looked over at her Bishop. "What do you think, Kei-san?" she asked.
Blinking slowly, Keijutsu finally willed his mind to snap back into focus, and he said, "I think I need a drink!" Without another word, he executed a one-eighty degree turn and stiffly marched away, leaving Sona and the others to look at him with confusion.
Once he was far enough away, he sighed. Just what the hell had that been all about? He was not the kind of person to become all googly-eyed after seeing some pretty girl in a nice dress, he reminded himself. But then another, more traitorous part of his mind pointed out that Sona was not just 'some pretty girl'. She was an intelligent, assertive and beautiful young woman that he personally knew. And that her dress wasn't just 'nice', it was fantastic.
Shaking his head to try and rid himself of these thoughts, Keijutsu approached the drink table and had to refrain from staring. The centerpiece of the table was a normally something like an elaborate ice sculpture of a goose or swan. But here, it was a statue of a great phoenix with its wings spread. And instead of ice, it was made of fire.
Taking a drink from next to the statue, he noted that the fire was completely self-contained and gave off no heat, not even when he out his hand right next to it. Another strange use of magic, one that he'd love to examine if he had the chance. Such was his distraction that he barely even noticed when another Devil walked up to stand right next to him.
Indeed, he didn't even acknowledge other presence of said Devil until he spoke. "A most interesting statue. Are you awed by its craftsmanship, or bored by its ostentatiousness?"
Looking over at him from the corner of his eyes, Keijutsu noticed immediately that, for a Devil, he looked remarkably human, both in appearance and energy signature. He had short black hair that was kept close to the skull, with dark brown eyes. His slightly tanned skin tone spoke of someone that didn't spend much time outdoors, but did so enough to not be a recluse. And within his eyes was spark of… something, but that 'something' was, he couldn't put his finger on.
Deciding to answer the question he had been given, he said "I suppose you could say it's both. The skill required to create a self-containing, heatless statue made of fire is something I can appreciate. But you're right; even for an engagement party, it is rather excessive."
The man nodded. "Right on both accounts. I can tell you're not someone who's used to events like this, so I'll give you some advice. Depending on which ones you talk to, Devils are some of the most prideful and egotistic beings you will ever encounter. Their entire existence revolves around what humans call 'sin', and they have no qualms about showing it. So, I would suggest that you get used it." His manner as speech was concise and refined, and Keijutsu could detect the hint of an accent in there. Italian?
Raising an eyebrow, Keijutsu turned to face him fully and said "I'll keep that advice in mind. However, you seem rather knowledgeable on the subject yourself, despite my senses telling me that you're at least partially human. Care to explain?"
"If it interests you so much, I'm a half-Devil. My father was a Devil, and my mother was a human, giving me the blood of both. And you are a reincarnated Devil, yes?" the young man responded.
Keijutsu nodded. "Indeed I am. But that doesn't explain how you know so much about Devil politics."
"I suppose it doesn't. I am, shall you say, a political student, and human politics are not so different than Devil politics. Much of the terrain and obstacles are the same, and your enemies can be similarly predictable," he said.
"Enemies? Terrain? You sound as if you're describing a battlefield during war, not politics."
He waved a hand. "What are politics but wars without swords? And conversely, what is war but an aggressive form of politics? Only a handful of people ever understand this principle, and even fewer are able to use it to their advantage. I'm fortunate to be one of those who can," he said.
Before Keijutsu could comment on that, there was a burst of fire near the front of the room. "Well, it looks like the man of the hour is here. I'll have to return to my fellow peerage members now, if you'll excuse me," he said.
"Of course. I have some other people I need to talk to as well before this event inevitably goes awry. It was an experience, speaking with you," the Italian man said, and walked away.
As he rejoined the Student Council and took a sip of his drink, Keijutsu mused on the encounter he just had. There was something about that man that intrigued him, like a secret hidden within a painting that you couldn't uncover. What's more, neither of them had actually revealed their names to each other. How interesting. And what did he mean by the engagement party 'going awry'?
As he returned to Sona, he found her sitting at a table, looking rather bored. Maybe these kind of parties weren't her thing either? When he sat down, she suddenly said "By the way, I had something I was curious about."
"Oh? And what's that?" Keijutsu asked.
She leaned forward. "Now that you're my Bishop, I believe it's time that we get to better know one another's past. We both know some information about another as we are now, but if you and I were to know more about each other, it would help us be able to better communicate in the future," she said.
What she didn't say was that this was also because she was still, in no small part, curious about Keijutsu and how he had come to be the person he was today. That is, the one person who had ever been able to beat her.
Keijutsu considered it, before shrugging. "I don't see the harm, in that," he said, and sat back.
"Well, as you already know, I am an orphan. I never knew my parents, and was raised in an orphanage in Kyoto. I kept to myself most of the time, mainly due to the fact that I was poor at interacting with others back then. The problem only got worse once I discovered my magic, but didn't have control over it. Children who tried to approach me would become scared when I could make things levitate like in movies, or could make animals obey me without training them. I could even, if I tried hard enough, do the same to them."
Sona frowned. "I imagine that being able to force someone to do something, even when they didn't want to, frightened the other children," she said.
"You imagine correctly. None of them would approach me, even when I promised not to do it to them. It scared the caretakers too, enough that they sent me to another orphanage to be raised. But then they were scared off as well, and I kept getting passed between institutions like a delinquent with a bad rep. It was only once I was older, and was able to actually able to control my magical skills enough to hide them, that things got better."
At that point, Keijutsu smiled. "However, it wasn't all bad. I did manage to make a few friends during my childhood, even though they were spread out across the country. I still keep in contact with them, occasionally. And of course, I had my love of science, something that fascinated me even before I learned that I could use magic."
"And it was once you learned that the two could complement each other that you started to learn Artifice," Sona said, making him nod. She hummed. "You know, I might like to meet these friends of yours someday. From the way you describe them, they seem nice enough," she told him.
Keijutsu chuckled. "Maybe someday, Kaichou. But what about you? What was your childhood like as the heiress to the Sitri family?" he questioned.
Sona shrugged. "Well, I wasn't always the heiress, to tell you the truth. That was originally my older sister, but she gave up the chance to become the head of the family when she took on the title of Leviathan," she said, making her Bishop raise his eyebrows.
"You mean the Leviathan of the Four Satans? Your older sister is the one with that title?" he asked.
"Right. And since a Devil can't be both one of the Satans and head of one the 72 Pillars at the same time, the place as heiress went to the next person in line. That is to say, me. Outside of that, my childhood wasn't very worthy of note. My parents raised me with as much love as was possible, and gave me the education I needed to become one of the brightest young Devils in the Underworld," she told him.
He smiled, and the two of them sat in silence. That ended a few minutes later, when the entrance doors burst swung open and a pair of Riser's guards fell to the floor. Standing over them was Issei, his Sacred Gear activated and his fist extended.
Oh, so that's 'going awry' meant.
From there, Keijutsu was treated to an entertaining display as Issei declared his intention to bring Rias back with him. And when more guards tried to apprehend him, the other members of the ORC got involved and laid waste to them.
Then Sirzechs Lucifer, Rias's older brother and the leader of the Underworld himself, stepped forward and revealed that it had all been his doing. He said that it was all to give Riser a 'second chance' to do better than he had in the Rating Game, when he had almost been defeated by someone with considerably smaller numbers, experience and skill. And that 'second chance' involved Issei and Riser competing in a one-on-one fight.
The two of them were then transported to an arena to duke it out, with everyone in attendance watching. The first thing Issei did was reveal that he had unlocked the Balance Breaker for his Sacred Gear, the Scale Mail. However, he could only use it for as long as it took the dragon to count down from ten without having the strain kill him.
So, the next few moments consisted of a very short but still impressive fight. The Scale Mail increased Issei's strength and speed considerably, putting him at the same level as Riser on both terms. But the Phenex still had his regeneration and immortality, tipping the scales back in his favor. They had fought, landing blow after blow on each other until Issei revealed yet another surprise.
Apparently, his access to the Scale Mail had come at a cost. He had sacrificed his own left arm to the spirit of the Red Dragon Emperor. But since the arm itself was no longer his own, Issei could do something else with it. That 'something else' was carrying a cross and holy water.
While holding the cross, any blow Issei landed actually burned Riser and didn't heal. Furthermore, he transferred what power he had after the countdown was over to the holy water, before pouring on Riser's face. It ate through the flesh like acid, causing the Phenex incredible pain. And then, using the holy water, cross and Sacred Gear in tandem, he was able to deal the finishing blow.
Following the battle, the engagement party ended. There wasn't much point to continuing it if there was no longer any engagement to celebrate.
As they left, Keijutsu was looking forward to what would happen next. It seemed that Rias and her group could provide all sorts of entertainment, as well as a wealth of new subjects to study. He was looking forward it to it.