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'm sorry I couldn't save you.
.أنا آسفة لعدم مقدرتي على إنقاذك
Entschuldigung,
dass ich dir nicht helfen konnte.
Perdón por no haber podido ayudarte.
Perdón por no haber podido ayudarte.
Pardonne-moi 
de ne pas avoir pu te sauver.
Scusa se non sono stata in grado di salvarti.
Me perdoe por não ter
 conseguido salvá-lo.
Прости, что не смогла спасти тебя.