Different from the previous movies, this film focuses on the relationship between Misu Arata and Shingyouji Kanemitsu.
It starts with their first meeting, when Shingyouji took the test to enter Shidou Gakuen as a junior high student and fell in love with Misu at first sight, to two years later in the present time. The appearance of the legendary senpai Sagara Takahiro becomes a problem between them since Misu has always admired Sagara. Takumi, Gii, and Akaike want to help Misu and Shingyouji in this matter.
It also features a side story of Takabayashi and his boyfriend Yoshizawa.
