Unable to break into the top five in the competition per the condition of Yuinosuke's special training, Chitose feels "disappointment" for the first time. After that, her first Valentine's Day is spent in Itsuki's room! Chitose unintentionally rejects Itsuki, who couldn't stop his flood of love for her. Though the air was uncomfortable between the two of them, they told each other their true feelings, and their bond became deeper than before! Then, spring came, and Chitose and her friends finally advanced to cram classes…!?