Battle Royale: Enforcers manga volume 4 features story by Koushun Takami and art by Yukai Asada.

Kaede Yamaki, the tough, resourceful leader of Squad 6, has set out to scout the island and find out what's going on. In the supermarket, she comes across signs of a battle and makes a gruesome discovery. Who else could be there, and what will Yamaki have to do to survive? Elsewhere on the island, tensions within and between the squads continue to escalate. Sakamoto and Ninomiya try to make contact with Kunimitsu, but are they walking into an ambush?