One of the best mangas I've read so far. I wish his relationship with Sugawa was explored more, like how both of them coped with the incidents, how their feelings started to grow, etc.
Just how incompetent are the faculty members, really? There's like a dozen cases with the same MO, and no action is taken, no parents are called, and no police involved.
This would've been better if this was a full-fledged series instead of a one shot. So many things happening in the background, it relies too much on the "tell" part, it's hard to sympathize with these characters who are supposedly badass.