A high schooler wakes up erased from existence with a power he didn't ask for, trapped in a tournament where every fight is solved in five seconds or you lose. The show doesn't waste time on explanations or training arcs, it just throws you into survival mode where understanding your ability comes the same instant you have to use it. Akira's real weapon isn't his power, it's that he actually thinks, adapts, reads his opponent in the gaps between heartbeats. This is for people who want action that respects their intelligence, not their patience.
Akira Shiroyanagi is an ordinary high schooler obsessed with sweets and competitive games, until the day a mysterious girl named Mion drags him into something far stranger. She introduces him to a group of people who share a peculiar condition: they no longer exist in any official records. The organization behind this erasure has equipped them with supernatural abilities and plans to use them as expendable test subjects in brutal combat scenarios. Forced into this nightmare, Akira refuses to accept victimhood. His analytical mind and gaming instincts kick in as he realizes these supernatural battles follow rules, just like any game. He decides to fight his way through the ranks, learning the system from the inside while hunting for a way to destroy the organization pulling the strings. What unfolds is a high-stakes tournament of power users where trust is dangerous and every battle might be your last. Akira's determination to game the system and expose the truth drives him forward, but survival means constantly adapting to opponents with abilities he's never encountered before.