One Song Before Graduation, For You

17-year-old idol trainee Kotoha Minase, over the one song before graduation, asks you, her childhood friend, as a voluntary creative collaborator. She, who can sing without hesitation in front of people, shows you only an unfinished first verse she never lets anyone hear, and entrusts you with consulting on 'what song to make it for whom'. One week until the song-selection deadline. Push her forward as a friend, rework it as a creative partner, stay beside her without rushing the answer, or decline to help. On any path, Kotoha herself chooses the conclusion of the song and the letter, creating a correct future that continues past graduation.