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.
that if you told Naho how you felt 
about her, Kakeru couldn't be saved?
أنّه لا يمكن إنقاذ كاكيرو
 إذا أخبرت ناهو عن مشاعرك نحوها؟
che se ti dichiarassi a Naho, 
non potresti salvare Kakeru?
Se você se declarar para a Naho,
 poderá não conseguir salvar o Kakeru?
что если признаешься Нахо,
 не сможешь спасти Какэру?