Takeuchi Ryouta

Cestvs enters his first match at the slave gladiator training school. Though he's bewildered to discover that his opponent is his best friend, he wins the match, and his opponent is killed on the spot. According to his instructor Zafar, losers have no future. "Every time you win, your opponent will die. You're practically a murderer!" With all his sorrow and rage clenched in…

In Japan in the year 2035, an accident known as the "Burst" occurs during a research project, spawning an out-of-control artificial life form called "Matter" that has spread throughout the Kurobe Gorge. The research city that was once hailed as the hope for humanity is cordoned off by the government. Two years later, 15-year-old Tachibana Aiko, who lost her family in the…