I'm Just a Mob Character, but I Took in the Exiled Villainess

Randolph Victor, once a Japanese man, finds himself reincarnated in a world that feels like a familiar video game. Following his own interests, he trains diligently until an unexpected event reveals the truth: this is actually an otome game. To make matters more ironic, he’s just a nameless background noble. But things take a surprising turn when Randolph ends up rescuing the villainess who was meant to be exiled from the kingdom.