Synopsis
Suhan, who attends high school, is frustrated because he can't get along with his younger sister Sunmi. During a visit to Jinyong's house, he saw Jinyong getting along well with his sister. Jinyong pulls out a small stone and says, "I wasn't on good terms with my sister either, but this helped us."
As a result of the stone's mysterious power, the past had been changed in a mysterious way. Suhan used stones to change Sunmi's memories one by one, and since the past had been changed, he was able to get closer to her. When Suhan fell in love with altering the past, things happened that never happened before...
Are you my little sister?
This type of game is generally referred to as a Visual Novel. (Example: NEKOPARA, Sakura...)
Every time you make a choice at the decision points in the story, the plot changes. You can see different endings through this.
Before these decision points, the prologue portion of the game will conclude.
Purpose
The goal of the time travel stone is to form a close sibling relationship with Sunmi.
Sunmi's current relationship with you will change based on what you do to her when you time travel.
Time travel, however, does not always result in good things.
If you end your time travel at a different time, the ending will be very different.
Before these decision points, the prologue portion of the game will conclude.
