i will tell you the real ending, mc will married 3 of the girl and he fusion with the real owner of the body and after that his hair turn into black/white . though its not legal for male having 3 partner or marriage certified in that world mc try talk to them and they agree also they had one kid but we still didnt know which one is giving birth from those 3 girl. so yea happy end...god mc is f retard always prioritize the step sis he should know how wrong her doing but hey as long you are pretty f them logic right?