Ichiro unexpectedly encounters his teacher, Kana, in the school's men's room; Kana asks Ichiro for help in the infirmary.

When a thunderstorm hits, Ichiro and Kana wind up spending a while together trapped in a laundromat; Kana baby-sits Ichiro's sister during the summer holiday.

There's sure to be a perfectly innocent, unsuspicious reason why Kana is now in Ichiro's room. On a related note, Ichiro's mother seems to be up to something.

Kana and Ichiro find themselves all alone on the beach and denying their feelings, but there's sunscreen to apply and venomous bites to treat.

Mayu wants to grow closer with Rin and lunchtime provides the perfect opportunity. Later, Rin has to shield Mayu from prying eyes after her shirt becomes caught in the train door.

Rin and Mayu run into each other unexpectedly on a rainy day. Later, Mayu remembers when she first met Rin.