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.
It warns against inviting Kakeru 
to walk home with us,
إنّها تحذر من دعوة كاكيرو
 ،للعودة إلى المنزل معنا
Ich sollte Kakeru nicht anbieten,
dass er mit uns zurückgeht.
Decía que no invitara a Kakeru
Decía que no invitara a Kakeru
« Empêche Kakeru 
de rentrer avec vous. »
Mi chiedeva di non invitarlo 
a tornare con noi, o cose simili,
A carta pedia para eu não convidar 
o Kakeru no primeiro dia
Он пишет не звать Какэру с нами