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"...
No, he usually goes somewhere 
else to play after lunch...
Nein, nach dem Mittagessen
geht er immer woanders hin …
No, suele ir a jugar a otro
 lado después de almorzar…
No, suele ir a jugar a otro
 lado después de almorzar...
L’après-midi, en général,
il s’amuse à courir dans toute la forêt.
No, di solito dopo pranzo va a giocare
da qualche altra parte.
Mas geralmente ele vai brincar em
vários lugares depois do almoço...