Maki was a previous winner of Battle Royale, by winning in a very smart way. As the time limit was almost up and more than one student alive, all the collars would explode very soon. So Maki used her technical skills to trick out her collar with her issued weapon a pair of tweezers to rip out a wire 5 seconds before all the collars detonated, but hers. When she went to the classroom to go back home as the winner of the Battle Royale, her teacher accused her of cheating and in return she shot her teacher, and like others has run away and was found by Shuya. After reuniting with her parents Shuya told them what happened and her parents and herself joined the Wild Seven. Maki took there places after her parents were murdered as the technical wizard of the Wild Seven and helping Shuya and Yona