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...
Now you're like a couple working up 
the nerve to pop the question.
.إنّكما تتصرّفان كثنائيّ بدآ يفكّران في الزّواج
Wie ein Pärchen, das auf den Moment
für den Heiratsantrag wartet.
Ahora parecen una parejita
pensando en el matrimonio.
Ahora parecéis una parejita
pensando en el matrimonio.
On dirait que vous cherchez
quand faire votre demande en mariage.
Adesso sembrate due fidanzatini
che stanno iniziando a pensare al matrimonio.
Agora estão agindo como um casal que
está começando a considerar o casamento.
Теперь вы словно пара,
которая о браке подумывает.