It's Yume and Mizuto's first summer together as stepsiblings. Their parents are unable to return home one night due to a typhoon. Now alone in the house together, trouble arises when Yume spots a certain creepy crawly in her room. On another day, Mizuto accompanies Yume clothes shopping for a swimsuit in preparation for an upcoming family trip to the countryside. It's in situations like these that the two seem to be finding themselves reminiscing about the past more and more...
You two are acting like a couple 
going through a rough patch.
.إنّكما تتصرّفان كثنائيّ يواجهان مرحلة صعبة
Ihr seid wie ein zankendes Pärchen.
Parecen una parejita discutiendo.
Parecéis una parejita discutiendo.
On dirait un vrai petit couple.
Vi comportate come due fidanzatini
che stanno passando un brutto momento.
Vocês dois estão agindo como um
casal passando por uma fase difícil.
Вы прямо как парочка,
у которой сейчас ложный период.