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...
Since we're just buddies, there's only
 so much we can do together.
.بما أنّنا صديقين، فلا يوجد الكثير لنقوم به معًا
Und wenn wir nur Kumpels sind, kann ich
nicht alles mit ihm erleben, was gehen sollte.
Como solo somos amigos, hay muchas
cosas que no podemos hacer.
Como solo somos amigos, hay muchas
cosas que no podemos hacer.
En étant seulement amie
avec Mizuto,
Dato che siamo solo amici, non ci sono
tante cose che possiamo fare insieme.
Mas, já que eu e ele somos apenas amigos,
não há muito que possamos fazer juntos.
Мы лишь приятели, а значит, вариантов 
развлечений у нас не так много.