Honestly though the talking in poetry/LOVELESS gimmick pretty much is the meat of it. It amuses me. I never claim to have complicated tastes in characters, though.
I mean his backstory is interesting and a positive given the story isn't actually about having a solid villain it's about Zack.
Genesis is a good character not a particularly great villain I guess is what I'd say. But the poetry thing/inferiority complex is probably enough to get people to hate him so yeah he's certainly adequate there.
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No problem!
This is a cute and pop genocide of love!