Rihito Sajō is a quiet and intelligent student at Touichikou High School, an unexceptional all-boys high school, where he is tutored for the school's choir by classmate Hikaru Kusakabe. They begin dating after Kusakabe impulsively kisses Sajō, and grow closer over the course of the year; Kusakabe rebuffs a romantic advance on Sajō by music teacher Manabu Hara, and Sajō attends a concert where Kusakabe performs as a guitarist. On the day of his mock college entrance exam, Sajō suffers a panic attack, and reveals that his transfer to Touichikou was prompted by low test scores caused by his anxiety. Sajō takes the exam with encouragement from Kusakabe, and the two affirm their desire to remain together.