A share house with Ryo from the future and three people, 'Yuki Ehana,' 'Shiori Kato,' and 'Hitoko Murakami,' has begun. Meanwhile, the band 'Chahan' by Yuki and his friends is criticized by the critic 'Shuichi Aihara' in a music magazine. The three are called by the president, Yuichi Yanagishita, and if they are criticized by Aihara, they will be dismissed as the end of the industry.
Yuki persuades Yanagishita to withdraw his dismissal if he can look back at Aihara three days later. Meanwhile, Hitoko, who has a crush on her rival band vocal 'Seiichi Izumi', leaves a mark on Seiichi's mixing. There is no function to erase the footprints of mixing in 2006. Ryo, who witnessed it, promised to erase his footprints and instead signed a contract with Hitoko. The content was to have Hitoko, who usually doesn't say her true intentions, say her true intentions.
Hitoko went to a clothing store and her parents' ramen shop with Ryo, and was encouraged by Ryo to say what she really meant. Even in front of Yuki and Shiori, she has a quarrel as a result of her true intentions ....