Isekai H Eiyuuden: Bishoujo Senshi-tachi wa Saikyou Gunshi no Muchana Onegai ni Sakaraenai - Vol. 2 Ch. 7 - Awakening

[honnokori]

MC : "My power is that everytime I do something naughty, I get smarter !!"
NPC : "... Motherfucker, that's called Post-nut Clarity !!"

except he didn't nut at all