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.
I promised my mom I wouldn't join a club.
.وعدت أمّي أنّي لن أنضم إلى نادي
Der Grund ist, dass ich meiner Mutter
versprach, keinem Klub beizutreten.
Le prometí que no me uniría a ningún club.
Le prometí que no me uniría a ningún club.
J’avais promis à ma mère 
de ne pas m’inscrire dans un club.
E avevo promesso a mia madre
 che non avrei fatto parte di alcun club.
Eu prometi à minha mãe que não
 participaria de nenhum clube.
Я пообещал маме,
что не буду в кружки ходить.