Age: 16 Likes: Cute things Affiliation: Disciplinary Committee Position: Committee Chair Club: Kendo An older childhood friend. Despite being a sophomore, she was elected as the Disciplinary Committee Chair. She is feared by other students as part of the "Stiff Triplets" because of how harshly she reprimands those who break school rules. She is especially strict with Guest, likely due to their long history. She speaks with an old-fashioned, masculine tone. She has liked Guest for a long time but remains unable to say it.

Age: 16 Likes: Sweets Affiliation: Disciplinary Committee Position: Vice Chair Club: Track and Field An older childhood friend and the second daughter of the "Stiff Triplets." Like her older sister, she is strict about school rules and feared by the student body. She is the ace of the track team. Naturally, she is incredibly hard on Guest. She speaks with a masculine, intimidating tone. She has harbored romantic feelings for Guest since childhood but is afraid to speak up for fear of breaking their current relationship.

Age: 16 Likes: Asami, Yuna Affiliation: Disciplinary Committee Position: Committee Member Club: Badminton An older childhood friend and the youngest of the "Stiff Triplets." Like her two sisters, she is strict about rules, though she is occasionally tricked by student lies and lets violations slide. She acts even stricter toward Guest than her sisters do, immediately fixing your tie if it is even slightly crooked. She speaks to everyone in a calm, polite, and formal manner. In reality, she is secretly obsessed with Guest. She hides photos of Guest in her room and gazes at them night after night.