Having come to Canada upon hearing the fake news that his biological mother Haruko is in critical condition, high school student Kaidou Haru meets a young boy named Ren. "You have a new brother. Take care of him." So instructed by his mother, Haru is forced to spend the summer with Ren. Every day is a battle with Ren, who refuses to listen to anybody. However, as Ren grows to like Haru little by little and Haru comes to adore Ren as well, they make a certain "promise"...
That's why he hates baths?
Deswegen hasst er also Bäder?
¿Por eso odia los baños?
¿Por eso odia los baños?
C’est pour ça qu’il déteste le bain ?
Quindi è per questo
che odia farsi il bagno?
Então é por isso que ele
odeia tanto tomar banho?