Toilet-bound Hanako-kun, Vol. 21 (Manga)

It's autumn at Kamome Academy, and the annual school festival is underway. Nene is excited to tour the festivities along with Hanako, Kou, and Mitsuba...but when an onslaught of supernaturals bursts onto the scene, their relaxing afternoon turns into an unexpected crisis! Little do they know, though, the culprits behind the attack have their sights set on something greater—the yorishiro of No. 1 of the Seven Mysteries, the Clock Keepers...