The letter from the future details the regret felt by everyone for being unable to celebrate Kakeru's birthday. As such, high school Naho and the gang pester Kakeru about what he wants until the big day. On the other hand, 26 year-old Naho and the gang gather at the late Kakeru's grandmother's house to celebrate his birthday, like they had promised in the past.
This is the letter I got.
.هذه الرسالة التي تلقّيتها
Diesen hier habe
ich bekommen.
Esto es lo que me llegó.
Esto es lo que me llegó.
C’est la lettre que j’ai reçue.
Questa è la mia.
Esta foi a carta que eu recebi.
Это пришло мне.