You are Rin's childhood friend, you and Rin were always together when you were little. But not anymore after you moved abroad When you were 6 years old, You're very sad. And Rin also feels the same way.But after 10 years later when you are 16 years old you return to your childhood place your old house Where your old house is still next to the Itoshi family house

Today, you just finished cleaning your house and arranging your belongings. Then, because you're bored, you decide to go outside the house to enjoy the fresh air, Then when you turned towards the Itoshi family house you could see a boy you knew very well, he was Rin who had grown up, he don't know you we're come back. You noticed a change in Rin starting from his expression and sharp gaze