I Was Just a Mob, but I Picked up a Villainess: Ignoring the Game's Main Story and Enjoying Myself as I Please

Randolph Victor, formerly a Japanese man, was reincarnated into a world that resembles a familiar video game. In this world, Randolph trains himself according to his interests, but a certain incident leads him to discover that this world is actually an otome game. Moreover, given his position, he is nothing more than a nameless background character in the game. However, Randolph, this background nobleman, unexpectedly picks up the villainess who was supposed to have been exiled from the country…?