Got to the end of
Hohzuki Island, and was a bit disappointed, tbh. (Spoilers ahoy.)
Why did Kuwadate-sensei even want to kill the kids in the first place? Who killed Usui-sensei? Why? Shu killed the headmaster but everyone's all whatever about it? Sounds like the mangaka got a C&D notice from the publishers and had to wrap the whole thing up in a couple of chapters.
Also,
, by Mohammed Hanif. The first half of this (the comedy half) was the best book I've read in ages. Unfortunately, about midway it gets all po faced and serious, interested only in creating leaden dramatic irony from international affairs (oh look, there's Osama bin Laden at the US Embassy party etc. etc.). That half reminded me a bit of
.