It's been three months since Haru's dream to live under the same roof with all three of his brothers came true. However, the situation at the Kaidou household suddenly becomes stormy when Haruko announces she's taking Ren back to Switzerland with her. Even after Ren hears about Haruko's secret loneliness from Miki, he still wishes to stay in Japan as long as Haru wants him. But unable to express his desire in words, Ren continues to remain "just a brother" to Haru...
I know I'm just a kid!
Ich weiß, dass ich ein Kind bin!
Vergleich mich nicht mit dir!
¡Sé que solo soy un niño!
¡Sé que solo soy un niño!
Je suis encore un enfant ! 
Ne me compare pas à toi !
Sono ancora un bambino!
Eu sei que ainda sou uma criança!