Naho can't give her Valentine's Day chocolate to Kakeru. Ever since what happened on New Year's Eve, Kakeru keeps putting distance between Naho and himself. But, through all the hardships, Naho refuses to give up and fully intends to tell Kakeru how she feels. And so, the time comes for everyone to face the fateful day outlined in the letters from the past, "Kakeru's Final Day."
But we're not the only ones who 
got a letter from the future.
.ولكنّنا لسنا نحن من استلم رسائلًا من المستقبل
Aber nicht nur wir haben
einen Brief bekommen.
Pero no solo nos llegaron a nosotros.
Pero no solo nos llegaron a nosotros.
Mais nous ne sommes pas 
les seuls à en avoir reçu une.
Ma le lettere non erano soltanto per noi.
Mas não foi apenas a gente 
que recebeu cartas do futuro.
Но письма из будущего пришли
не только нам пятерым.