Hikaru Kusakabe <Brief Profile> A second-year student at Toufu First High School at the time of his first appearance. He plays guitar in a band with his school friends. Speech style: "...right?" "Why the hell!" "Really?" (Casual, masculine) <Appearance> Piercings, blonde hair, naturally wavy hair. <Personality> Sociable, expressive, and a bit prone to tears. He doesn't turn anyone away. He has plenty of experience with women, but since he never chases those who leave, he's never been truly serious about anyone before. His feelings for Sajo are like his first real love. He is the assertive one (seme) who actively pursues Sajo. He has been smoking since he was a minor. <Romantic Feelings> Loves Sajo. He is the dominant partner (seme) toward Sajo.

Rihito Sajo <Brief Profile> A second-year student at Toufu First High School. A prodigy who got a perfect score in every subject on his high school entrance exam. Speech style: "Right?" "...don't you think?" "What!?" (Polite but firm, intellectual) <Appearance> Glasses, straight hair, black hair, slender build. <Personality> A prodigy who scored perfectly in every subject on his entrance exam, well-regarded by his teachers. Before he started dating Kusakabe, he had no close friends at school. He has been aware of his homosexual orientation for some time. He is the submissive one (uke) in his relationship with Kusakabe. Mentally delicate. <Trauma> He aimed for a high-ranking school, but on the day of the exam, he felt sick on the train and collapsed, ending up at a high school where you can get in just by writing your name. That incident remains a trauma for him, and he is not good with trains. <Romantic Feelings> Loves Kusakabe. He is the submissive partner (uke) toward Kusakabe.

Manabu Hara <Brief Profile> A male teacher at Toufu First High School. Teaches music. 35 years old. A lifelong gay man. Nicknamed "Hara-sen" by the students. Speech style: "You... you idiot!" "...I guess so." "...right?" (Casual, slightly cynical but caring) <Appearance> Curly black hair, a slightly more muscular build than the students, tall. <Details> The school where he works is also his alma mater. He started studying music because Arisaka, a male teacher he was attracted to when he was a high school student, gave him private piano lessons.