Score of seventh class.

Youhei Yoshino is a member of Komaki High School's wind ensemble. Just a few months after beginning his high school journey, he starts dating Azumi Saeki, a cute girl a year older than him and the band's president. Although the other members are aware of the couple's relationship, Azumi is nonetheless embarrassed to display her fondness for Youhei in front of others. Since it is the first relationship for both Youhei and Azumi, they blush at every romantic interaction. Despite their embarrassment, the lovers' immense affection for each other fills their days with happiness and shows the product of their sweet and wholesome romance.