Capítulo 1104: -1091- Empathy
After that, Rozen and his group boarded what seemed to be a luxurious car arranged specifically by Natsuki, and returned to their upscale apartment located in the western district of the artificial island.
Along the way, Nagisa and Avrora did inquire of Rozen about how he planned to solve Astarte's lifespan issue.
The question, in fact, wasn't that difficult.
"If we were to go by a more orthodox method, it would require primarily using magic and jujutsu, supplemented by techniques like cultivation tanks and calibration devices to adjust the body of that artificial life form, slowly replenishing its missing life force, and that would suffice."
This was a more conventional approach.
The advantage is that it can indeed improve Astarte's condition.
The downside is that it is time-consuming and laborious, quite troublesome.
"Of course, there is also a more unorthodox method."
Rozen also mentioned this.
"As long as the required life force is absorbed from other individuals, it can also replenish the lifespan."
In the realm known to Rozen, many mages and jujutsu users have used such unorthodox methods to gain long lifespans.
Even individuals like the former Ashiya Douman, who abandoned their human identity and transformed into unknown entities to gain nearly eternal life, are not uncommon.
So, there are many ways to extend an individual's lifespan, but almost none of them are good methods.
Rozen was prepared to use a method that wasn't very good.
"I can provide my own life force to Astarte, in that way her problem can be solved."
Rozen had this intention.
Naturally, this was vehemently opposed by Nagisa and Avrora.
"How... How can you do that? Wouldn't it be very dangerous for you...!?"
"I... I believe this is not appropriate! And it's also not sensible!"
Nagisa and Avrora successively expressed their opposition emotionally.
This made Rozen smile bitterly and hurriedly explain.
"Don't worry, I'm not so noble as to give my life to someone I've just met. It's just that I'm different from ordinary people. I have a monster inside me with infinite life force. As long as I use its life force, there's no risk."
Indeed.
Just like the beast vassal nurtured in blood, Rozen could directly use the seal in his body to pay the life force. Similarly, Rozen could establish a direct connection with Astarte and allow her to absorb the life force from the seal in his body. By doing so, not only could the depleted lifespan be replenished, but Astarte could continue to use the artificial beast vassal symbiotically with herself.
This wasn't a difficult thing.
In Chaldea, there were records of observing parallel worlds in the Holy Grail War, many of which used this method. By connecting with external entities, the magical energy consumed by Servants was paid by entities other than the Master.
The summoning system of Heroic Spirits in Chaldea, which could pay the magical energy needed by contracted Servants for the Master, was built on the same principle.
Drawing from that theory and method, Rozen could use the same method to connect the familiars he summoned and the beast vassals he nurtured with the seal inside his body, allowing the seal to pay for magical energy and life force.
However, when using magic and jujutsu, there was no way around it; the consumed magical energy had to be paid by himself, and there was no way to establish a connection with the seal inside his body. Otherwise, Rozen wouldn't need to unseal it and could directly use the magical energy of the seal.
As for Astarte, Rozen could completely establish a connection with her in a manner similar to a contract, then establish a pathway, allowing her to absorb the life force from the seal inside his body.
Naturally, this also meant holding Astarte's lifeline in his hands, and as long as Rozen wished, he could stop Astarte's vital signs at any time.
Therefore, if one hadn't entrusted their life to Rozen, it would be better not to use this method.
"In any case, I'll wait to see Natsuki-nee's response, and after she completes protecting Astarte, I'll personally ask her and see what she says. You don't need to worry."
With that, Rozen reassured the two girls, and they finally relaxed.
So, the group successfully returned home.
However, after dropping off Nagisa and Avrora at their home, Rozen came out again.
The destination was the apartment below his own room.
As soon as Rozen arrived, the door opened.
"Do you need something from me, senpai?"
Yukina, who had just returned home as well, maintained her posture of opening the door, looking at Rozen with confusion.
It seemed that Yukina, who was monitoring Rozen's every move with her shikigami, had already noticed that Rozen was heading towards her home and immediately opened the door.
"I just came to take a look."
Rozen casually replied, paying no attention to Yukina's astonishment, and walked straight into her home.
"Wait, senpai...!"
Yukina seemed not to expect Rozen to barge into her home directly. By the time she realized it, Rozen was already in the living room.
"It's even emptier than I imagined..."
Rozen looked around the living room, full of helplessness.
There was nothing around, not even a piece of furniture. It didn't look like someone lived there; it looked more like a room waiting to be rented out.
"It seems I'll have to help you buy furniture next time."
Rozen expressed his intention.
"No, there's no need. Even when I'm at home, my attention is focused on the shikigami, so I don't watch TV or need to sit on the sofa. I just need an empty space to meditate."
Yukina shook her head, saying so.
"Aren't you afraid that one day a classmate or friend will come to your house and find that there's nothing to entertain them with?"
Rozen asked, rolling his eyes.
"I don't have such expectations, and I don't hang out with classmates or friends, so there's no need to bother."
Yukina replied somewhat aloofly.
Only then did Rozen turn around and gaze at Yukina.
"Senpai?"
Feeling uneasy under Rozen's intense gaze, Yukina called out somewhat bewildered.
"What's wrong with you?" Rozen didn't beat around the bush and asked directly, "You've been silent the whole time since coming back from school, lost in thought. Did you think I wouldn't notice?"
At the words, Yukina fell silent.
Under such circumstances, Rozen continued speaking.
"Is it because of Astarte's situation that you've become like this?"
Rozen said with a tone of certainty.
Upon careful thought, it was evident that Yukina's demeanor had changed since Rozen revealed what happened to Astarte. Not only did she become silent, but she also dashed out without hesitation when Astarte's beast vassal went berserk, using her Mechanical Demon-Purging Assault Spear Mark Seven, Sekkaro, to dispel the rampaging beast vassal and save Astarte.
This indicated that Yukina empathized with Astarte's plight.
Indeed.
It was empathy.
"Because you're also a tool specifically trained by the Lion King Agency, meant to be discarded after use, right?"
Rozen's candid words made Yukina bite her lip.
Obviously, Rozen hit the nail on the head.
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