I can't imagine about the story that based on "revenge, after you get your revenge, the story is end? it will be easy because the MC is OP but if the story isn't end what will the author tell us about
@lovolo honestly i dont remember bc i havent read it in awhile. What i do remember is she does
get turned into a demon/subordinate. Sorry if i couldn't answer ur question OH WAIT i think i remember a bit. He got help from his buddy (the darkness) and was able to do many other things. Think kind of like Reincarnated slime when rimuru talks to his great sage.