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?
Second-years stay in the same class,
،يبقى طلّاب السّنة الثّانية في نفس الفصل
Wir bleiben auch
im 2. Schuljahr hier drin,
Como no cambiaron de clase,
Como no habéis cambiado de clase
Cette année, 
pas de changement,
Per voi del secondo anno la classe è la stessa,
Como não há troca de alunos
 entre as turmas no segundo ano,
Второгодки не меняют класс,