Toilet-Bound Hanako-kun (2020)

S2E1 Hanako-kun of the Bathroom

Nene and Kou find their school lives turned upside down as they experience sudden, rapid aging. Hanako pinpoints the source of the chaos: a group of fellow Wonders known as the three Clock Keepers, who are said to manipulate time at Kamome Academy. Determined to confront the troublesome apparition, the trio embarks on a mission to track them down before any more damage is done.