In his journal (which is written suspiciously like a light novel), Mizuhara Kohei reflects on his three years at Kitazawa High: A typical public school, or so he says.

Enduring run-in after run-in with a host of bizarre girls, boys, teachers and even a classist academic system, Kohei’s adventure sees him pushed to the limit—not just in terms of mental fortitude, but also his sanity as he tries to play the straight man in a school populated by attractive lunatics.

So begins the story of a love triangle of an ordinary boy, his enigmatic senior and his cutesy childhood friend.

So begins the story of a story ostensibly focused on writing, only to end up with a whodunnit situation where Kohei finds himself the target of a mysterious figure hellbent on expelling him.