It’s the spring of Naho’s second year in high school, and Naho receives a letter from herself, 10 years in the future. The letter accurately depicts what’s about to happen, including details on a transfer student from Tokyo, Kakeru Naruse, who ends up sitting beside her in class. On top of that, the letter also begs Naho not to invite Kakeru out with her group of friends on that day alone, but why?
I'm writing because I don't want you, 
my 16-year-old self,
،أنا أكتب لأنّي لا أريدكِ، نفسي ذات الـ16 عامًا
Ich habe mir mit 16 Jahren
diesen Brief geschrieben,
Te escribo porque no quiero
 que mi yo de 16 años
Te escribo porque no quiero
 que mi yo de 16 años
J’ai écrit cette lettre
à mon moi qui a 16 ans
Ho scritto questa lettera a te,
 la me stessa a 16 anni,
Escrevi esta carta porque não queria
 que eu mesma, de dezesseis anos,
Я пишу тебе, потому что не хочу,
 чтобы я шестнадцатилетняя