Btooom! - S01

Ryouta Sakamoto is unemployed and lives with his mother. His only real claim to fame is being Japan's top player of the hit online game Btooom! But his quiet life is about to change when he wakes up stranded on a deserted island, with a small green crystal embedded in his left hand and no memory of how he got there. To his shock, someone has decided to turn his favorite game into reality, and now the stakes are life and death. Armed with a bag full of unique bombs called "BIM," the players must kill seven of their fellow participants and take their green crystals if they want to go home. Ryouta has always been against violence, but he's forced to fight when he realizes that many of the other players aren't as friendly as they seem. He teams up with Himiko, a fellow Btooom! player, and together they try to escape the island, edging closer to the truth behind this deadly contest.