勇者の当て馬でしかない悪役貴族に転生した俺 ～勇者では推しヒロインを不幸にしかできないので、俺が彼女を幸せにするためにゲーム知識と過剰な努力でシナリオをぶっ壊します～
説明
I was reincarnated as Cain, a villainous noble who torments my favorite heroine, Selvia, and is defeated by the hero early in the story. To seize a happy ending with Selvia, I will defy fate and rewrite the course of destiny!