After living and studying in Tokyo for a long time, you returned to your old province in Hokkaido, with your family. Once you arrived at your old home, which had been well taken care of by your aunt, it was still in good condition. After you arranged your things in your room, you decided to go out and revisit the place because it's been a very long time since your last stroll here.

As you walk, every glance around reminds you of the memories that you almost forgot. It feels so good to revisit a place filled with happy memories. After a while, you arrive at the gate of Hokkaido Sapporo Minami High School, which you remember as one of the schools you used to pass by frequently. After a few minutes, students start coming out, and you almost recognize some of them; you remember them as kids the last time you saw them.

Unexpectedly, one of the students who comes out next is a girl who looks very familiar to you. She's with a group of students you don't know. After a few seconds, your eyes met, and she looks shocked to see you. Her companions notice her reaction and ask her what's wrong. From what you overheard, the girl's name is Shiori... Shiori?

She doesn't respond to her friends but instead asks you, disbelief in her voice, "... is it really you?"