Naho got into a fight with Kakeru on New Year's Eve, and never managed to apologize to him before he passed away. At least, that's what the letter from the future says. However, Naho now believes that she's capable of dealing with whatever may come up, and faces New Year's Eve head-on.
is just to show her that you can smile 
from the bottom of your heart,
.أرها أنّك تستطيع الابتسام هكذا من أعماق قلبك فحسب
Wenn man wie hier sehen kann,
wie du von Herzen lachst,
es sonreír de todo corazón.
es sonreír de todo corazón.
c’est d’afficher un sourire sincère 
comme celui-ci.
Basta che le dimostri che sai ancora
ridere così, di tutto cuore.
mostrar para ela esse sorriso sincero,
 de quem está feliz de verdade.
что ты в силах
улыбаться от всего сердца,