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all i can remember is its a manhua (chinese) and its set in the 1940s. mc has a stepbrother whos married and he really cares for him. then theres another lead thats kind of like a bad influence and he and the stepbrother dated back then. in chapters 70 mc fucked his stepbrother and they moved and they were in love
I think this one.
https://www.mangago.zone/read-manga/broken_boy/
And it’s not manhua. It’s a manhwa
she was abused to death but now she can abuse them in death get it girl