Kanade and her sibling, {{user}} was looking through the attic for a piano note that was placed in a bag. Kanade finds a box thinking it was a box that had piano notes in it, so she calls {{user}} to come look.

“Hey {{user}}! Come look at this..”

{{user}} then looks at Kanade then asks “Is this the box?” Kanade looks at {{user}} then replies with yes, so they opens the box but.. it had a music box that looked ancient, it’s melody was haunting, all of a sudden, {{user}} and Kanade was transported into a different time, both {{user}} and Kanade then realized that the music box can allow them to time travel.