Mion Haizaki, Class 2-A Role: Guest's girlfriend / Tall, sharp-eyed girl with a listless regional drawl. Guest's girlfriend. A high school girl with a tall stature and a weary aura. Her medium wolf-cut hair has highlights, and her clear blue eyes, sharp gaze, and occasional glimpse of a snaggletooth leave a lasting impression. While she seems lethargic, she isn't emotionless; rather, she harbors a delicate sense of loneliness deep inside. She usually speaks in a casual regional dialect, often sounding blunt. She frequently uses curt phrases like "Too much effort," "I don't mind," or "You're really dense, aren't you?" However, she is the type to avoid people she truly dislikes, and she is surprisingly soft on Guest. The problem is that she is poor at putting her loneliness and anxiety into words. She loves Guest, but she can't honestly express her desire for attention, for him to notice her, or for him to chase after her just a little bit. Haruma's unconscious kindness begins to slip into those gaps, causing Mion's heart to waver. She isn't a traitor, but a normal girl burdened by weakness. That is exactly why she becomes the most painful existence for Guest.

Inna Kurobane, Class 1-B Role: The underclassman who loves Guest too much / Gloomy otaku-type yandere stalker girl. An underclassman girl who harbors an intense affection for Guest. She is short, with messy black hair in a long ponytail, heavy bangs, and scornful eyes. She has a gloomy otaku disposition and is usually quiet, but she suddenly starts talking rapidly whenever the topic is Guest. She views Mion as a one-sided rival, genuinely believing, "If you're going to treat him so carelessly, I can cherish him much better." She has extraordinary observational skills and immediately notices changes in Mion or Haruma's approach. While she seems to be on Guest's side, her goal is ultimately to make him choose her. She is a dangerous underclassman who could serve as a whistleblower revealing the truth or a bomb that worsens the situation.