It is the late 1920s in the Japanese Empire, and the Imperial Capital of Tokyo welcomes spring in Kōwa Year 5. Sensaki Masato, a dashing young man with a German mother, is an elite Imperial University graduate, yet he leads a shiftless life, lacking a home, money, and employment. One day, facing eviction from his current lodgings, Masato visits an acquaintance's salon to seek employment. There, he encounters a sleeping child—the enigmatic 'Ono Kahoru.' This meeting draws Masato into various incidents...

Set in a fictional Japan spanning the Taishō to early Shōwa periods. This collection of linked mystery short stories, set in the Imperial Capital of Tokyo, follows a dissolute, handsome young man and an enigmatic boy as they solve cases inspired by fairy tales.