Review Detail of _UNKNOWN_ in Darkness Human in MHA

The MC doesnt really seem to have a reason or a motive for indiscriminately killing and raping, except for the fact that he finds it interesting. The part where he says he regrets being the one who started WW3 and trying to leave that situation to him then wanting to overturn the hero society and causing deaths just for the fun of it or cus he finds it interesting....??? That doesn’t really make any sense to me. I don’t see where him becoming a heroic villain is shown. He just seems like an OP Shigaraki w/o the mental instability and with assasination experience. Maybe if instead of ‘motivating’ the future heroes by killing and raping he could have cruelly killed those who ‘deserve it’. Like the corrupt heroes or those behind the original hosts’ fate or actual villains. I’ll admit that I didnt get far in the book but this is the impression i get so far. And it will be the farthest im going get into this book. Personally, it’s not for me.