Evolution of World:Super Harem

A random guy kills a monster and ends up growing OP as time goes on. Oh and he gets a massive harem consisting of waifus from different worlds and random women. Fused World's:Kim Possible, Incredibles, Scooby Doo, Komi can't communicate, Uzaki wants to hang out, Ben 10, Hotel transylvania Summoned Waifus worlds:Dragon Ball, DC, Marvel, Gravity Falls, My Hero Academia