Funny how the wrongest conclusion he got about Mao was actually reasonable. Her having Androphobia (fear of men) after all that is somehow not a dumb conclusion at all. Obviously we know why she acting like this but it checks all the boxes of what Mugai thinks whats wrong with Mao is.
Also is this Mao Fanclub guy not hyperfocused and envious of the fact Mugai saved Mao and think about that? or has he concluded that since he's "Harmless"-kun still in school, he assumed Mugai is asexual or something? probs the case. Weird how Mugai still retained his harmless reputation despite being in the limelight for saving someone from 3 harassers.