3 episodesFirst aired 28 November 2018
E1Nov 20185m
Included in DVD/Blu-ray Volume 3. The girls run across Hanako's little brother Ken on the way home from school. He wants to go to the bookstore and then home to study, but they convince him to go to the playground with them instead.
E2Dec 20186m
Included in DVD/Blu-ray Volume 4.
E3Dec 201813m
Included with seventh volume of the Asobi Asobase manga.