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.
The letter was supposed to erase my regrets.
.كان من المفترض أن تمسح الرسالة ندمي
Dabei erreichte mich der Brief,
Se suponía que la carta llegó
para que no me arrepintiera.
Se suponía que la carta llegó
para que no me arrepintiera.
Si cette lettre est arrivée,
Quella lettera mi è stata mandata
 per cancellare i miei rimpianti.
A carta só chegou até mim para que eu 
pudesse acabar com os meus arrependimentos.
Письмо должно было 
уберечь меня от сожалений.