Hajimeme isn't even a bad character but he's so annoying in his every interaction with Komaeda.
Komaeda quite literally says the exact same thing and explains himself in detail numerous times and yet, every single time, Hajimeme is just "g..gughh..?!! what does he MEAN...?!!?" It's simple, it's actually not that hard to understand. Did he never hear the idea of the light at the end of the tunnel? Or karmic justice? Komaeda's ideology isn't that insane, it's just taken to the very extremes with Komaeda taking it as his personal mission to play a hand in something otherwise akin to fate playing out. It makes sense, especially with his backstory and talent... Hajimeme is so stupid.