Kaikeimin

In a world where people can transform into monstrous forms known as "kaikeimin," a young man named Ryo lives a quiet life, hiding his own ability to change into a powerful beast. He works as a deliveryman in a city where these transformations are feared and regulated by the authorities.

One day, Ryo's routine is shattered when he encounters a mysterious woman being pursued by a group of hunters. She possesses a rare and dangerous kaikeimin form, and her capture could lead to catastrophic consequences. Ryo must decide whether to reveal his secret and risk everything to protect her, or remain hidden and let the hunters succeed.