MTL - Ultimate Scheming System - v3 Chapter 1412 I'm wrong

In a world where Classes, Stats, and Levels are the everyday norm, Reivyn has a secret.He was unusually aware of his surroundings from an incredibly early age, and Skills and Stats were acquired easily. He was just the son of an ordinary village family, and nothing appeared out of the ordinary on the surface. But below the surface, dreams of another life help shape his mentality and growth. Why does he have some remembrance of a past life, and what is his purpose in this new one?“Soul of the Warrior” is what I call a Semi-Isekai LitRPG. I say “semi,” because Reivyn's past life is remembered like a dream, and very incomplete. It is still Isekai, though, as he remembers enough that it directly shapes his personality and his sense of self.The System that governs the world of “Soul of the Warrior” is a combination of modified versions from Selkie's “Beneath the Dragoneye Moons” and Kosnik4's “Magic Smithing.” I have changed enough of these Systems and combined them in a way that is unique that I'm mostly sure it's fine, but I still have requested permission to use these ideas. They have both graciously granted me permission.Winner of the April Writathon Challenge.

Synopsis: System Awakening in Elegia – The System Activates!Jessie never imagined his life would end so abruptly—only to begin again in the world of One Piece. Reincarnated in Elegia, the Land of Music, he finds himself in a peaceful yet melancholic scene. Before him lies a motionless Uta, cradled gently in the arms of the infamous Red-Haired Shanks. Jessie, still powerless and stunned, can only watch as her life slowly fades.Frustrated by his helplessness and lack of strength, he suddenly hears a sound echo in his mind:[DING!][“Supreme Check-In System initializing... 1%... 100% complete.”]A voice rings out in his head, calm and mechanical—but filled with promise. The Supreme Check-In System has fully loaded. Its ability? Every time Jessie sets foot on a new island, he receives a heaven-defying reward.Stunned and thrilled, Jessie asks, “Do I have a novice reward?”[DING!][“Yes. Claim with your mind.”]Without hesitation, he shouts in his thoughts, “CLAIM!”DING![Congratulations! You have received the Sword God Inheritance (MAX)][Congratulations! You have received the 3-Domineering System (MAX)][Congratulations! You have received the One Fruit: Supreme Resurrection System]Eyes wide and heart pounding, Jessie grins with uncontrollable joy.“System, I love you so much! You’re the best! Hahaha!”With unimaginable power now coursing through him, Jessie sets his sights on rewriting destiny—starting with saving Uta, and eventually challenging the very balance of the seas!

Her brother, who was the one who caused a coup d’etat, had sliced her throat. After she returned to the time before she died, she decided that she would somehow tame him and survive!

But..

Did she tame him too much?

***

“Brother, why don’t you get married?”

There was no reply from him, instead the glass that he held popped and cracked.

“Oh no! You’re bleeding.”

“Why should I get married?”

“Eh?”

“I already have you.”

Why should you get married, you say? You have to get the Empress so I can leave this castle! Sezh laughed strangely.

“Sezh.”

At that moment, she stumbled and Raytan pulled her body into his arms. His red eyes started to gleam suggestively while looking down at Sezh who was trapped in his arms.

“You know we are not real siblings.”