Battle Royale Enforcers (Manga) Vol 03

In the beginning, some of the students thought they might be able to escape the island by working together, but now tensions and rivalries arise to crush these hopes. Several students have died already, some even murdered by their own squad mates. Squad 2 tears itself apart, and the members of Squad 1 plot against one of their own. As the night wears on, bloodcurdling madness begins to take over... Viz Media Llc
(W) Koushun Takami (A) Yukai Asada