ヒロインに婚約者を取られるみたいなので、悪役令息ヤンデレキャラを狙います (Associated Names)

“When I was reincarnated into the world of a game, I became the villainous young lady, and it seems the heroine is after my fiancé. My feelings for my fiancé have cooled down, so I’ll quickly break off the engagement and find a new one. That villainous young master with a yandere character might actually…