I'm Looking For and anti-social protagonist who is happy with himself and like to emotionally abusing other.
Do not tag anti-social protagonist I've examined it and not a single one is anti-social of personal choice.
Thank you for helping

Lost + Brain

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looks pretty interesting though I expected Tatsumi Oga nature of the tip, but I have nothing against Light Yagami tipe

you might already know about this one but in Kami nomi zo Shiru Sekai the MC is anti social of his own will but he does not enjoy seeing others in pain, so i dont think this is really what your looking for

there is Iris Zero as well but that MC too does not want to harm anyone
the MC in Dr. Frost is also pretty anti social but it really focuses more about how he doesnt have any feelings

sorry i guess i didnt have anything that you really wanted, well i hope that was at least somewhat helpful

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Like educational manga? take a look at Ed U. Manga's list of manga here

Aiki should fit. That MC really loves abusing others...

Also, you may want to check the sadist tag. Since that may be closer to what you're looking for, than the anti-social. Of course, most of those under that tag would be nowhere near what you're looking for, but there should be a few that fit...

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Draconic aiki i have read, and like it
and Kunitoshi Joukyuu not an anti-social in fact he is an asshole that has fun to be an asshole and because of it I like him
Gale1 I am reading Iris zero, but the mc like to helps, mc is not anti-social but discriminated
and for Kami nomi zo Shiru sekai absolutely not my taste

Try suicide island