Kakeru gives Naho a hairpin. And on the weekend, Kakeru invites Naho to study with him for the upcoming exams. As the pair begin to grow closer together, Naho gets up the courage to invite Kakeru to see the fireworks together with her at the end of the school festival.
That's with parallel worlds.
.وهي العوالم المتوازية
Dabei handelt es sich
um „Parallelwelten“.
Los mundos paralelos.
Los mundos paralelos.
Celle de l’univers parallèle.
Ovvero, i mondi paralleli.
Para isso, existe a 
Teoria dos Multiversos.
С помощью параллельных миров.