Uh-Oh! Detention!

'''Uh-Oh! Detention!' (反省！しどうしつ, Hansei! Shi-dōshitsu) is the third episode of the second season of Isekai Quartet'' and fifteenth episode of the full series overall. It aired on January 28, 2020.

Summary
This new world is a great place: no fighting, no danger, and the classes are easy. But you REALLY don't want to get detention!