The Onigoroki is a festival of demons that happens every 300 years. But on this special occasion things go differently as one demon decides to protect humans.

The young police woman, Yamori Kisato, is transferred to a new city, but soon finds that work under her new senpai, Mahira, is not what she expected.

Rokuto Yagari is the youngest son in his family who refuses to participate in its traditional business. But one day his life changes.

The one shot was released in vol.2 of Jump GIGA in 2017.