Yako causes an incident when she changes in front of her childhood friend Kota after a morning practice. Her inability to recognize him as a member of the opposite sex turns out to be the root of the problem. Haruka faces her own difficulties with a tightening sensation in her chest. She believes it to be growing pains from her developing breasts, but Tamaki suggests her developing heart is the cause. When the group heads off to the summer festival, Haruka ends up taking Nayu by the hand.