When not preserving harmony between the living and spirit realms, Hanako-kun and his human assistant Nene Yashiro, a first-year student at Kamome Academy, fill their time with other activities.

There are rumors that one of Kamome Academy's Seven Mysteries, Hanako-kun, has gained an assistant: first-year high school student Nene Yashiro. Together, Hanako and Yashiro investigate the school's many mysteries, keeping the balance between humans and the supernatural. But in their free time, the two can often be found goofing off, engaging in various antics involving Yashiro's schoolmates and the lurking spectral entities that normal people cannot see.—MAL Rewrite

The spirit Hanako-kun and his human assistant, first-year student Nene Yashiro, keep the peace between supernatural forces and the students of Kamome Academy. When they're not fighting to maintain balance between the living and spirit worlds, how do they spend their time? Join Hanako-kun and Nene on their adventures after school!.—Crunchyroll