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...
But it's only natural for 
me to worry about you.
Aber ist doch klar,
dass ich mir Sorgen mache.
Pero es normal que me preocupe por ti.
Pero es normal que me preocupe por ti.
mais je m’inquiète pour toi.
Ma è naturale che io mi preoccupi.
Mas é normal eu me preocupar com você.