Tanpenshu Vol 1

From the Dark Horse edition

In this [i.e. 1st] volume, a disfigured misfit befriends a doomed Yakuza outcast, a group of school kids fail to see the anger that's about to boil over from one of their own, and members of an experimental theater troupe embark on a project that will test both their friendships and the group's grasp on reality

Source: OpenLibrary