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.
Then I want to read that manga 
you said was hilarious.
.أريد قراءة تلك المانغا التي قلتَ أنّها مضحكةٌ للغاية
Na, dann wohl der lustige Manga,
von dem du gesprochen hast.
El manga que dijiste
que era tan divertido.
Pues ese manga que dijiste
que era tan divertido.
Je veux bien lire le manga marrant 
dont tu m’as parlé.
Allora... il manga che fa ridere
 di cui mi parlavi.
Então, quero ler aquele mangá 
engraçado que você falou sobre.
Тогда ту забавную мангу,
которую ты хвалил.