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...
I mean, the only one you have 
is your school swimsuit, right?
لأنّ ملابس السّباحة الوحيدة الّتي لديك
هي ملابس السّباحة المدرسيّة، صحيح؟
Ich meine, du hast doch nur
deinen Schulbadeanzug.
Es que solo tienes
el traje de baño de la escuela, ¿no?
Es que solo tienes
el bañador escolar, ¿no?
Tu n’as que celui du collège,
Insomma, hai solo quello per la scuola, no?
Bem, você só tem o maiô da escola.
Так ведь у тебя только
школьный купальник есть, да?