Gleipnir

Sinopsis

Shuuichi Kagaya is an ordinary high school student with a secret: he can transform into a powerful, furry monster with a zipper down its back and an oversized revolver. He tries to keep his ability hidden, but when he uses his powers to save a girl named Claire Aoki from a burning warehouse, his quiet life changes. Claire, who is searching for her sister, discovers Shuuichi's secret and blackmails him into helping her, using his unique abilities for her own mission.