Can someone give me a non spoiler explanation why this game is so popular?
It’s so popular that other doujin circles have made doujinshis for it
It’s so popular that it has it’s own merchandise line
It’s so poplular that Watanabe sensei is making a fighting game based on it.
To top that, there’s an anime series of it currently in produciton.
And to think it’s just a “mere” doujin game.