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～

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～, I Was Reincarnated as a Villainous Aristocrat Who Is Stepping Stones for a Hero, and While I Was Trying to Make My Favorite Heroine Happy, Before I Knew It, I Was Stealing the Hero’s Events and Destroying the Storyline, I Reincarnated as a Villainous Noble, Nothing More Than the Hero’s Foil Since the Hero Can Only Bring Misery to My Favorite Heroine, I’ll Use My Game Knowledge and Over-the-Top Effort to Rewrite the Scenario

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!