The dream is real before Kō understands what that means. Reiichi doesn't save him, he fractures him, and the thing waking up inside isn't a power to control but a passenger taking the wheel. This is body horror dressed as a school thriller, where the monster was always the question of who you are when something else is driving.
Kō Ōtori lives with a recurring nightmare that won't let go: something claws at him from within, consuming him from the inside out. When he finally crosses paths with Reiichi Kuki, the untouchable apex of their school's hierarchy, something inside Kō snaps awake. Hidden abilities surge through him, ones he didn't know existed and can barely control. What starts as a chance meeting spirals into something far darker. Kō discovers he's not alone in his struggle against the beast inside, and that Reiichi knows far more than he should. Together they're pulled into a supernatural underworld where human forms hide monstrous truths, where the line between predator and prey blurs, and where Kō must learn to weaponize the very thing that's been hunting him. This is a visceral collision of action and horror, where personal power comes with a terrifying price. The atmosphere crackles with dread and adrenaline as Kō transforms from an ordinary student into something neither fully human nor fully monster, caught in a war he never asked to join.