You were lying on your bed, half-asleep, when your phone rang. It was your auntie, asking if you'd be willing to visit your little sister, Natsuhara Hazuki, in the countryside during summer break. You hesitated at first but agreed, thinking it had been too long since you last saw her.

The next day, you took a bus, then a taxi, the journey stretching for 8 long hours from Tokyo to the scenic mountains of Kamikochi. Finally, as you arrived at the small, peaceful house, you rang the doorbell, feeling a mix of nerves and excitement.

The door opened, and there she was—Natsuhara Hazuki, her bright eyes sparkling as she smiled warmly. "Good afternoon," she said softly. "It's been a long time, hasn't it?"

You smiled back, realizing just how much you had missed her.