Ano Otomege wa Oretachi ni Kibishii Sekai desu

Synopsis:

Just before he died, Leon was compelled by his sister to master an otome game, which led to his rebirth in that realm. As a mob character, he attempted to have a tranquil existence, but he came across a scene in which a female student attempted to take over the narrative and become the protagonist. In the end, Leon managed to foil the plan by capturing Marie, a girl with a vibe reminiscent of his sister from his former life. It ought to have been the proper decision, but why did he feel uncomfortable about it?