The Festive Monster's Cheerful Failure

As a high school freshman, Ikuya Magasa lacks any particular ambition or fascination, and simply allows time to elapse. However, his friend Kaze Amaba discloses a stunning truth during their commute home one day. "To be frank, I'm a tengu." Amaba had yearned to inhabit the world of mortals, and to maintain his residency, he implores Ikuya to partake in a musical group. Consequently, Ikuya's mundane existence begins to transform into a series of peculiar occurrences.