Kiitaro

Randolph Victor, a former Japanese man, is reincarnated into a world remarkably similar to a game he was familiar with. After training himself purely out of personal interest, a certain incident leads him to realize that this world is actually that of an "Otome Game." On top of that, looking at his social standing, he is unmistakably just a nameless mob character with no role in the story. Despite being an ordinary mob noble, Randolph unexpectedly ends up taking in the villainess who was supposed to have been exiled from the country...?!