I thought this manga was horrible. It's badly drawn, sexually violent and has deviated so much from the original novel (which is fantastic, btw) that it's just an overall disappointment, and really, rather disgusting.
Plus all the supposedly "cool" characters have mullets. UGH.
In the future, random Jr. High School classes are chosen to compete in a game called Battle Royale. The rules: only one student can survive after 3 days on an island or else they all perish. Weapons are handed out and each student is sent out into the field alone and unprepared for the horror that awaits them. The classmates turn upon themselves in a battle for survival, treaties are made and broken, and former friends become foes as the relentless countdown continues. Amid the betrayals and rising body count, two classmates confess their love for each other and swear to survive this deadly game together.