Absolutetrash's manga / #Action(12)

MC is an isekai returner who comes back with almost no memory of korea. One day a teen girl shows up at his house asking to be his daughter. He has to be like 10 years older than her max. He is super strong now, but hiding it.

Twins switch places, and both get abused in different ways. One grows up to be a junior level gangster, the other is forced to be an artist.