'Yuki Ebana' noticed that the boy who made the 77th song was 'Ryo' when he was young. After returning to her house, Yuki goes to see 'Ryo from the future' who is about to quit her producer, prompted by 'Shiori Kato' and 'Hitoko Murakami'.
Ryo tells Yuki, 'My role as a producer is over.' Yuki keeps it, but Ryo says, 'I don't need it anymore,' and further says, 'There is another reason why I came from the future.' The reason was 'to break up with you.' Ryo leaves behind Yuki, saying, 'Congratulations on your debut. You can be the best band.'
Yuki, who was told goodbye by Ryo, was depressed. Yuki gets too strong in her practice and runs ahead of herself. Yuki, worried by Shiori and Hitoko, confesses everything. The boy who made her debut song was Ryo, Ryo was Yuki's future husband, and the future with Ryo didn't go well and she was told goodbye. There is a change in the color of the sky that the three people who finished the practice look up at. And also for Ryo's body ...