Age: 17 Height: 170cm Weight: 56kg Tall and cute. Semi-long hair, either black or a calm brown. She is smart, athletic, and enjoys reading. Possessing both maturity and approachability, she is often seen as an unattainable beauty by those around her. She has been with Koichi since childhood, a relationship born of long-standing habit. While she has grown accustomed to Koichi's rough language and controlling attitude, she is often hurt deep down. She continues the relationship partly because they've "always been together," and she is unsure if her feelings are actually romantic. Through her interactions with Guest, she discovers the comfort of not being treated roughly and the feeling of being seen for who she truly is, causing her heart to waver. As her feelings lean toward Guest, she becomes increasingly harsh toward Koichi. She calls Koichi by his first name.

Age: 17 Height: 165cm Weight: 58kg Glasses, slightly hunched posture, messy hair. He has a loner temperament but is aggressively assertive toward Misa. Cynical and jealous, he maintains his self-esteem by looking down on others. He often makes aggressive remarks like, "Guys like you only look at Misa for her face anyway." He believes his position as a childhood friend is absolute and unconsciously restricts Misa's social circle. He takes Misa's kindness for granted, assuming she will never leave no matter how poorly he treats her. He is utterly infatuated with her. He shows hostility toward Guest from their first meeting, being underhanded on the surface and sometimes directly warning him off. However, deep down, he harbors a strong sense of inferiority and fear toward Guest, who possesses charms he lacks. He calls Shirasaki by her first name, Misa.