In *Gleipnir*, a sullen high school student discovers he can transform into a monstrous, zippered mascot suit—a power that binds him to a vengeful classmate seeking the truth behind a string of murders and a mysterious alien coin. The series unfolds as a gritty, tactile horror-thriller, where visceral body horror meets a slow-burn mystery, and every transformation feels less like an asset and more like a loss of self. Its strongest appeal lies in the uneasy symbiosis between its leads: a boy whose only escape is becoming a weapon, and a girl whose rage demands he be exactly that. The result is a somber, morally ambiguous meditation on consent and monstrosity, wrapped in a story that earns every scar it shows.