Kakeru lives and breathes the Live On card game, spending his allowance on booster packs and practicing relentlessly. Problem is, he can't win a single match. His deck strategies crumble, his timing is always off, and his confidence keeps taking hits alongside his losing streak. Everything shifts the moment he stumbles upon a small creature being hunted by shadowy figures through the streets. The animal isn't what it seems. When Kakeru protects it, the creature reveals itself as a Create Monster and grants him a card that defies all the rules he knows: a Live Change card with impossible power. Suddenly Kakeru has a real reason to fight. His practice matches become something far more serious as forces he doesn't understand begin circling him and his new companion. The game that once felt like a casual hobby becomes his gateway into a larger conflict, one where his newfound monster friend depends on him to learn what he's truly capable of.