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.
And even if he does, it'll be okay.
.ستحلّ الأمور حتّى لو كان كذلك
Und wenn,
dann ist es in Ordnung.
Y aunque te odie,
Y aunque te odie,
Ne t’en fais pas pour ça.
E se anche lo farà, andrà tutto bene.
E mesmo que isso fosse 
verdade, não tem problema.
Даже если и так, то ничего.