Hanai, smitten with Yakumo, volunteers his class to clean the school pool just to be near her. Chaos ensues as Tenma and the gang turn a simple cleaning session into an all-out aquatic battle.

Eri Sawachika, adored by the boys, receives another love confession. Inspired to cook nikujaga for someone special, she embarks on her first-ever grocery trip. But romance and cooking don't always mix…

Tenma is glowing after sharing rice balls with Karasuma. Meanwhile, Harima, in a creative funk, isolates himself to finish a manga submission. But his dreams of success may be thwarted—by editors and kappas alike.