One punch man.
Everything else is shit currently.
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Btw if you don't mind reading then I got a great suggestion for you.
Martial god asura, it has it all.
Rape
Murder
Backstabbing
OP main character
OP female character (less then mc ofcouse)
mindless killing
Romance....sort of
Monsters
immortals
magic
porn
YOU NAME IT.
IT HAS IT, only execution being that it's not for spineless fuckheads and kinda for psychos who enjoy murdering for fun. :d