Absolutetrash's manga / #strong male lead(2)

MC is murdered, and wakes up in the body of a novel character that will soon be murdered by her fiance! She teams up with the ML to fake an engagement so she doesn’t get killed. But what if it leads to real love? And what does the FL have to say about this?

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.