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?
Right, right. So I think that'll leave 
some free time in the afternoon.
نعم، نعم. لذا أعتقد أنّ ذلك سيترك القليل
 .من وقت الفراغ بعد الظهر
Es verdad. Puede que esta
 tarde tenga tiempo libre.
Es verdad. Puede que esta
 tarde tenga tiempo libre.
Oui, je pense qu’on aura 
le temps cet après-midi.
Ah, capisco. Quindi immagino 
che nel pomeriggio sarò libero.
Ah, isso mesmo. Por isso terá 
um tempo livre à tarde.
Точно-точно. Думаю, в полдень найдётся
 немного свободного времени.