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 and Make Her Happy

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 · Yuusha no Ateuma de shika Nai Akuyaku Kizoku ni Tensei shita Ore: Yuusha dewa Oshi Heroine wo Fukou ni shika Dekinai node, Ore ga Kanojo wo Shiawase ni Suru Tame ni Game Chishiki to Kajou na Doryoku de Scenario wo Bukkowashimasu · 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～