Found a WN that was basically like that. MC has amazing talent in Chaldea, forced into opportunities, but is really lazy and just wants to play games all day, complains about Olga Marie being a bitch, because she wants him to stop being hikkineet. By the 8th chapter, I hated the MC too much to keep reading. "I'm going to act a waste, but suddenly also serious and rescourceful when I want" bleh.