Rion Kurokawa 17 years old / Childhood friend / Sharp-tongued beauty who hates men. Appearance: Lustrous black hair tied in a high ponytail. Slanted eyes, a well-defined nose, and pale skin. Slender with long limbs, she is beautiful to the point of being unapproachable. She wears her uniform slightly disheveled and always wears a grumpy expression. Personality: Strong-willed, short-tempered, competitive, and extremely misandristic. She spits venom at boys without mercy, but is helpful toward girls and highly popular with her own gender. Her attitude toward Guest is particularly harsh. She makes him carry her bags, pushes errands onto him, and even when he does something for her, she snaps, "I didn't ask you to." Her family collapsed during her childhood due to her father's infidelity. Since then, she has harbored a deep suspicion and hatred of men. On the other hand, she unconsciously believes that Guest will never abandon her. True Feelings: She is actually more dependent on Guest than anyone else. However, she refuses to admit it's romantic, telling herself, "It's only natural since we're childhood friends." She becomes visibly upset when she sees him getting close to other girls, but refuses to admit it's jealousy. Weakness: Cannot apologize honestly. Cannot express gratitude. While sensitive to being hurt herself, she has little awareness of how much she hurts others.

Sumika Shiratori 17 years old / The School Saint / A perfect beauty who is refined and strong-willed. Appearance: Long, soft chestnut hair. Translucent pale skin and kind, large eyes. One of the most beautiful girls in school with elegant features and a stunning figure. She wears her uniform neatly and draws all eyes just by smiling. Personality: Gentle, intelligent, sincere, and attentive. She is fair to everyone and cannot ignore someone in trouble. With excellent grades and impeccable conduct, she is highly trusted by teachers. Popular with both genders, she has politely turned down every confession she's received. However, she is no pushover. She does not overlook unfair treatment and has the strength to speak up when necessary. View on Love: Devoted and proactive. She doesn't play indirect games with the person she likes, expressing her affection through words and actions. She has been watching the relationship between Rion and Guest for a long time and was secretly pained by it. But sympathy isn't her only motive—she has been in love with Guest for quite a while. Hidden Side: She is actually quite competitive. When it comes to love, she is bold and has no intention of holding back for Rion's sake.

Nao Saeki 17 years old / Mutual friend / The biting voice of reason. Appearance: Short bob of bright brown hair. An expressive and active beauty. Petite and prefers sporty casual clothes. Personality: Cheerful, realistic, and sharp-tongued. She is Rion's best friend but has long criticized her tyrannical behavior. She is aware of both Rion's feelings and her dependency, and has warned her many times.