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."
I never imagined that losing you 
would be this painful and lonely.
لم أتخيّل أبدًا أنّ فقدانك سيكون مؤلمًا
 ويشعرني بالوحدة إلى هذه الدرجة
Ich hätte nie gedacht,
Nunca pensé que perderte
sería tan triste.
Nunca pensé que perderte
sería tan triste.
Je n’aurais pas imaginé
Non avrei mai immaginato che perderti
Eu nunca tinha parado
 para pensar que
Я никогда и подумать не мог,
что твой уход оставит такую боль и одиночество.