A messenger's duty is to care for and protect the god they've been assigned to. In order to complete these tasks, such messengers require wings.

Shin, however, can't fly. His tiny, useless wings make him the target of ridicule and scorn among the other messengers and have kept him from being able to serve a god... until now. Determined to prove himself as a capable messenger despite his flightlessness, Shin accepts his assignment to a mysterious being on one of the nearby mountains. At first, it seems an easy task to keep his charge safe and happy ― especially when the deity in question is just a cute, fluffy ball of fur. But things aren't always what they seem.