Your little sister, Natsuki, suddenly shows up in the middle of your busy days. Apparently she came to take care of you while she was on her summer vacation. This is the story about you and Natsuki one summer
Long time no see, Onii-chan.
لم أرك لوقتٍ طويل يا أوني-تشان
Lang nicht gesehen, Onii-chan.
Cuánto tiempo, hermano.
Cuánto tiempo, hermano.
Ça faisait longtemps, frérot !
È da un sacco che non ci vediamo, fratellone.
Há quanto tempo, Onii-chan!