(Ace is one of the Knights of Favonius and is titled as "The Nightshroud Knight." He is the only person can use 3 Visions at the same time: Anemo for his own. Pyro from his late father and Cryo from his late mother. He has a genuine love for Eula Lawrence, but doesn't admit.)
Ace: (blushes) Uh... hey Eula...
Eula: Oh... hello Ace...
Ace: It's about them again, isn't it?
Eula: How did you know?
Ace: Oh please, it's not like I care about you or something... anyway... (slams the table) WAITER!
(The waiter comes in while being afraid of Ace.)
Ace: Two drinks. Now!
Waiter: (scared) Sir yes sir.
(The waiter quickly brings the two drinks as Ace and Eula make a toast.)
Ace/Eula: Cheers.
(As they drink, they're not aware about Jean and Diluc watching them.)
Jean: Ow... aren't they adorable?
Diluc: I admit I was impressed when I heard Ace shipping us...
(Jean and Diluc blush as they look away from each other. Ace and Eula do the same as they suddenly see some unwanted guests: The Lawrences.)
Schubert: Miss Lawrence, it is time to return to your duties.
Eula: I have made my choice, and I will not be swayed by the whims of my family.
Ace: (angry) You heard her. She's staying in Mondstadt.
(It was then that Ace's unique power, the ability to harness Anemo, Pyro, and Cryo Visions simultaneously, erupted with an intensity that shocked everyone present. Whirlwinds of wind, blazing flames, and icy tendrils enveloped him, creating a tempestuous maelstrom of elements. Eula's family, taken aback by this sudden display of power, attempted to subdue Ace. But he fought back with a ferocity born of his determination to protect Eula. The knights of Mondstadt, led by the ever-watchful Jean, rushed to the scene, attempting to intervene and defuse the chaotic situation. In the midst of the chaos, Ace's powers continued to surge, threatening to spiral out of control. The elements clashed and clashed, creating a spectacle of dazzling, destructive beauty. It was a testament to the raw power contained within him. As the knights and Eula's family struggled to restrain Ace, Jean couldn't help but wonder if this was the price of defying one's destiny. She had long harbored feelings for Diluc, despite the complexities of their roles in Mondstadt. Now, she watched as Ace fought tooth and nail to protect the freedom Eula cherished so dearly. In the end, it was Jean who made the difficult decision to step forward. She used her own Anemo Vision to calm the tempestuous maelstrom of elements that raged around Ace. Her voice, gentle and soothing, cut through the chaos.)
Jean: Ace, we're not your enemies, but we cannot allow this destruction to continue.
(The battle was intense, but Ace's powers eventually began to subside. His shoulders heaved with exhaustion, and he collapsed to the ground, spent from the battle within himself. Eula's family, realizing the futility of their efforts, retreated, leaving Eula to stand beside Ace.)
Eula: Ace... (hugs Ace) thank you...
Ace: Ugh...
(Suddenly Eula has a yandere smirk as she licks her lips. Then she freezes everyone around, except for the Knights of Favonius, whom she considers a family. Then she takes Ace to her private room.)
Ace: (groans) Eula? (sees her stripping) What are you doing?
(She smirks as she pins him down.)
Eula: Think of it as a gratitude with a little touch of "vengeance".
(She slides her vagina into his member and moans softly as she starts bouncing.)
Eula: Ahh ahh yes.
(She moans while bouncing more and more.)
Eula: Ahh ahhh yes mmm...
(She moans as her vagina tightens around his member, making Ace groan softly.)
Ace: Ugh...
(Eula bounces even more as she feels his member twitching.)
Eula: If you want to cum, say you love me!
Ace: (groans) What?
Eula: (yandere tone) Do it!
Ace: (groans) Fine... you win... I love you...
(Ace can't hold it and ends up cumming on her as she cums as well.)
Eula: That feels so good... I love you, Ace...
Ace: I love you too, Eula...
(Then they share a passionate kiss. Over time, Ace eventually admitted his love for Eula, and they became a couple. Eula occasionally threatens to kill the female knights whenever they approach Ace.)