Certainly! Here's a revision of your passage with the name changed from Maekar to Aerys:
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"I am about to do what is called a pro-gamer move," Aerys proclaimed as he exchanged the positions of the King and the Elephant on the Cyvasse board.
"My prince, you cannot move two pieces in the same turn," corrected Lady Ceryse Darklyn.
"I certainly can." He returned the two pieces to their previous position, then exchanged them again. "See, I did it again."
"This is against the rules of the game, my prince."
"No, it's actually an advanced move called Castling. See, I had not moved the King or the Elephant before this move, so I can move them towards each other," Aerys generously explained.
"That's not how it works. That's not how any of it works," she complained.
Ceryse was fifteen but spoke like she was older. A nerd, Aerys had decided. He had made a game of breaking her composure.
"Oh, yeah? You want to know how it works? I can go and play with any of the other kids in the yard and never look at you again, is how it works."
"That... is a compelling argument." Ceryse relented with a grimace. "A smart move, my Prince." She moved his Dragon towards the new location of Aerys's Elephant, trying to salvage her original strategy the best she could.
"Wow, you really are desperate!" Aerys commented, making her lips twitch. He didn't ask why a fifteen-year-old girl was so interested in spending time with a 10-year-old prince; it was probably something stupid anyway. But it did the job of passing time until Laena's funeral. And Aerys thought he could use some allies.
"Ah, it seems like you have won," he congratulated her.
"No, I really haven't," she denied, looking at him suspiciously.
"Since you have won—"
"There's clearly many ways you can still win—"
"Since you have clearly won—," Aerys emphasized and Ceryse sighed in resignation. "—I'll let you come with me to Driftmark, to attend the funeral."
"That—" she floundered at the unexpected invitation. "I do not think the Queen will simply allow me to join the journey."
"I'm sure she will," he assured her.
"Well, if you are so sure." She relented, likely assuming that nothing will come of it.
So Aerys went to see Alicent.
"Mother! I have decided to ride Urrax to Driftmark."
"No." She answered almost reflexively. Then put down the letters she had been reading, thought over his words, and added, "Absolutely not."
"Why not?" He whined.
"Because—because you are too young."
"I have already gone out on flights though," he countered.
"To my immense disapproval," Alicent spoke angrily, making him laugh.
"Come now, mother. I even promise not to burn anyone to death!"
"Don't. Don't even joke about this. You are not taking your dragon anywhere!"
"Fiiiine." He whined again. "But only if I get to take a friend with me."
"No—" She reflexively refused again.
"A human friend," he clarified.
"Very well." She sighed. "But there is no room on our ship; tell him to bring his own ship."
Aerys laughed at that condition. "Yes, mother. As you command."
The next time he met Ceryse, he gave her the good news and told her to bring multiple ships, and when they departed for Driftmark, the Darklyn ships accompanied the Targaryen and Hightower ones.
Their reception at the island was awkward. Viserys had wanted to go to Dragonstone, pick up Rhaenyra and her children, then arrive together. But his sister had left on her own and they ended up meeting at Driftmark.
Still, Viserys had been happy to see his daughter after several months of separation. The only thing ruining the king's day was that his brother wouldn't talk to him. It was rather pitiful to watch him send messenger after messenger to check if Daemon had returned from his flight to wherever he had gone to brood, and being told that he hadn't.
The funeral took place the next morning with Vaemond giving a moving eulogy. Well, it at least moved some eyebrows when he said "the Lady Laena leaves two true-born daughters on the shore" and put emphasis on true-born.
Subtle. Aerys could appreciate that.
"Salt courses through Velaryon blood." Oh, he did it again. And he's looking straight at Rhaenyra. Ballsy.
"Ours run thick." Ok, you can stop now.
"Ours runs true." Wow, you're still going.
"And ours must never thin." Daemon broke first, and Aerys joined him with a giggle. That made Daemon laugh harder, and Aerys had to put his fist between his teeth to stop his giggling.
Laenor looked up from his sister's coffin, seemingly registering them for the first time during the ceremony, and Aerys had to look away lest the reminder that this man would be joining his sister soon enough set him laughing again.
Thankfully, the ceremony ended, and they moved to breakfast. At least the others did. Aerys was sent to his room with no food for his "uncouth display" at the funeral and was only allowed out for the social gathering in the castle.
He was already cranky by the time he reached the open event hall and got crankier when he found his siblings. Aegon was getting drunk, Aemond was saying something about incest and keeping the blood pure, and Helaena was playing with insects that she had gathered from gods know where. She either had them caught in Driftmark or carried them all the way from King's Landing.
He didn't know which possibility weirded him out more. Sometimes Aerys wondered if he was the most normal of all of Viserys' children. And that thought terrified him.
But what really made him cranky was the junk she was muttering about dragons of black and green dancing. Aegon didn't like Helaena muttering because he thought she was stupid. Aerys didn't like her muttering because she was making actual fucking prophecies.
He had no idea why the book had not mentioned that. Perhaps because she ran out of her quota of the three lines assigned to her character in the book. Regardless, she would mutter out prophecies from time to time, like some type of foreshadowing device in a movie.
Nothing about her situation made sense to him. Did she see the prophecies in her dreams? If so, did she sit down and write them down to sound like poems? And then decide to recite them at random times?
He could just ask, but prophecies were always treacherous in this world. And the only way to be safe from them was to avoid them religiously.
So he jumped off the railing and made his way to Laenor who was standing drunkenly in the waves. Aerys took a position where the knight could see him but did not speak up. It took a while for Laenor to speak, and Aerys had almost forgotten about him, being focused so much on standing amidst the waves.
"Have you come to laugh again, boy?" He slurred.
"No, just to apologize. I am truly sorry for your loss."
"You are much too like your uncle. I like it not."
"Would my uncle have come to apologize?"
"No, I suppose he would not have." Then he paused before continuing more soberly. "Perhaps I should make him."
Aerys perked up at that. A point of conflict between Laenor and Daemon. It had to have hurt to hear that your sister died in a foreign city, in some ways, because of Daemon. Could this be the reason he gets killed?
"No one would fault you if you did," he encouraged the drunk knight.
Their conversation was interrupted as Ser Criston and Ser Carl Qorrey came to retrieve them. Aerys's presence must have attracted more attention than just Laenor had.
He walked silently alongside his minder as they returned to his family.
"Father!" He greeted the King cheerfully. Viserys was sitting with Lord Jasper Wylde and having drinks, even as Helaena played at the back of the room.
"Ah, Aerys! Come, I wished to speak to you."
Lord Jasper, already the Master of Law, had gathered even more power since Rhaenyra left the capital and the Commander of the Gold Cloaks got turned extra crispy in Harrenhal. He was aware enough to know that no one liked him here on Driftmark and so had just stuck close to Viserys to be a better brownnoser.
"I am listening." He allowed, smiling softly.
"This morning during the ceremony," he wheezed, tired from the exhausting day. "That wasn't very courteous. Lady Laena was your kin, tied to us with both blood and marriage. The appropriate respect must be shown."
Aerys wondered if he gave the same speech to Daemon. He doubted it.
"You are right, father."
"I am?" Viserys asked, too used to Aerys trying to get out of trouble using convoluted excuses.
"And I wish to make it up to our Velaryon kin. Father, I wish to squire for Lord Corlys, as... penance, of sorts. And to bring our houses closer together."
"That is—an excellent idea, my son! I shall—" he coughed, and Aerys hoped that
"That is—an excellent idea, my son! I shall—" he coughed, and Aerys hoped that the decrepit middle-aged man didn't fall down dead. "I shall speak to Lord Corlys. You can join us for dinner tonight. But it is getting late now. Take your sister back to your mother." He and Helaena were dismissed, and he went to leave the room.
"No." Helaena, however, refused, which made him snicker.
"Daughter, I must speak to Lord Jasper now. You should return to your chambers."
Helaena sniffed and turned to the Stormlander Lord. "Have I been bothering you, my lord?"
He did not expect to be addressed and replied with a reflexive "Not at all, princess." And Helaena went back to playing with what appeared to be a mixture of dolls and insects.
"Ser Criston," Viserys turned to the Kingsguard. "Please escort my daughter to her mother."
"Princess, please come with me," Cole asked with a nod to the King.
"No," she replied again, and Cole went to pick her up, only to startle back as Helaena threw a spider at him.
The Kingsguard made a valiant effort of getting the arachnid off of him without looking too undignified.
"Helaena!" Viserys chided. "He could have gotten hurt!"
"He'll be fine. Ser Octo is very quick."
"Ser Octo" Jasper mouthed.
"I meant Ser Criston, he could get bitten."
"I am quite fine, your grace," the knight straightened his white cloak and assured the royals.
"Fine. I will go. But only if Father agrees to play with me tomorrow."
Viserys had no choice but to assent, lest there be more arachnid on human violence.
It was a trick Aerys had taught her.
Viserys was a pretty negligent father, but not intentionally cruel. So whenever Helaena wanted something, mostly to get him in a good mood to ask for more gold or to bend to her whims, she wouldn't ask outright. She would just keep demanding until he inevitably relented.
And so, the siblings smiled at each other and returned to their assigned rooms. Helaena was actually quite fun without her cryptic mumbling.