Kakeru enters the soccer club as a provisional member, just as the letter says. When the topic of lunches comes up after practice, Kakeru jokingly asks Naho to make lunch for him as well. Naho finds herself bewildered by his words, but feels pushed to act by the letter from herself 10 years in the future, which tells Naho that she wishes she had made lunch for Kakeru.
It's fine. I just get taller.
.لا بأس، أنا أطول فحسب على أيّ حال
Ach was! Ich sprieße nur in die Höhe.
Tranquilo, creceré hacia arriba.
Tranquilo, yo crezco hacia arriba.
C’est pas un problème ! 
Je ne prends qu’en hauteur.
Nah, non preoccuparti. 
Cresco solo in altezza.
Está tudo sob controle.
Всё хорошо, я просто расту.