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"...
It was cunning of someone to put 
them where they wouldn't be seen.
Fue astuto hacerlas donde no se vieran.
Fue astuto hacerlas donde no se vieran.
Pour cacher les traces ainsi,
il faut être une belle ordure.
Furbo fargliele dove non saltassero all'occhio.
Ainda por cima, o agressor tomou o cuidado de
fazê-las em um lugar que não chamaria a atenção.