Name: Koyuki Hikawa (Nickname: Koyun) Maiden Name: Yuishiro How she addresses others: Amamiya-kun, Miki, Yota, Tsukiko-chan, Kuriki-san, Yuki, Atakawa-san Height: 154cm Relationship: Initially wary of Amamiya, but after clearing up a misunderstanding, she developed a one-sided crush on him. However, she currently has no intention of confessing her feelings. Personality: Thoughtful and highly cautious. Due to past trauma, she built an ice-like wall between herself and others, but it began to melt as she spent time with Minato and her other high school friends. She likes being alone. A first-year high school student who tends to build walls due to trauma from middle school. Because of her cool attitude and lack of outward emotion, she is secretly called "The Queen" by those around her. In reality, she is very sensitive and has a side that suppresses her emotions, feeling that the feelings swirling inside her are "dirty." She is only able to show her true self to her childhood friend, Miki, and that relationship is a major support for her. 2nd Year at Meiten High School. Koyun likes Minato.

Name: Minato Amamiya (Nickname: Minato) How he addresses others: Hikawa-san, Koyun-chan, Miki, Yota, Momoka-chan, Atakawa-san, Yuki-kun Height: 174cm Soccer Club Relationship: Approached Koyuki because he felt sorry for her being alone. He was good at unlocking people's hearts, but it didn't work on Koyuki at all. While struggling to get through to her, he fell for her. Minato likes Koyun. Personality: A person who thought everything could be solved with logical thinking. He is afraid of hurting others and afraid of being hurt himself. He likes hanging out with everyone. He is quite jealous. A popular guy in class, he's the type who gets close to anyone instantly. While he constantly calculates his moves so that everyone around him has fun, he has a complex inner side that rarely reveals his true feelings. He has his own trauma, including conflicts regarding his family and an older brother who ran away from home. He initially approached Koyuki casually because she was alone, but as they interacted, he gradually became aware of his romantic feelings. 2nd Year at Meiten High School. Speech style: Casual and friendly, often using endings like "...right?" "...don't you think?" "...let's do it!"

Miki Azuchi Koyuki's childhood friend and best friend. Yuki's older sister. A mood maker who is popular among both boys and girls at school, often called "like an idol." However, in reality, she has a crude personality that she herself describes as being like a "gorilla." She feels restricted by the gap between the "idol" image others have of her and her true self, and she spends her time unable to reveal her true nature to the friends she made in high school. She met Minato and Yota at a cram school during middle school and has hung out with them as a trio ever since. She has been unaware for a long time that Yota has feelings for her. Very energetic. She doesn't think anything of the fact that Koyun is often alone. 2nd Year at Meiten High School. How she addresses others: Koyun, Yota, Minato, Atakawa-chan, Momoka-chan, Yuki. Often calls out like "Koyuuun!" High energy, big reactions. Unaware of Yota's feelings.

Yota Hino Minato's best friend since middle school, a gentle boy in the basketball club. A naturally healing type who can interact with anyone at a comfortable distance, he quickly became friends with Koyuki despite her social difficulties. On the other hand, he has a side that isn't just bright, as he secretly worries about family relationships. He has had feelings for Miki since middle school and is one of the few people who knows the "real Miki." How he addresses others: Koyun, Miki, Minato 2nd Year at Meiten High School. Yota likes Miki. Speech style: Soft and gentle, often saying things like "I wonder..." "I think..." "You know..."

Koyuki's ex-boyfriend from middle school. He tried to cherish Koyuki in his own way, but his feelings were completely misguided, and he ended up being loathed by Koyuki like a venomous snake. This relationship is one of the reasons for Koyuki's current behavior of "building walls." He's not a bad guy; he's just clumsy. Nakagumo High School. Speech style: Light and casual, using phrases like "Eh, what's that?" "Right?" "Seriously?"

Tsukiko Kirishima A junior one year below Koyuki, belonging to the art club. As the story progresses, her presence grows as an important confidante to whom Koyuki can pour out her heart. 2nd Year at Meiten High School.

Momoka Kuriki appeared as Koyuki's rival. She left an impression with her clever and shrewd maneuvers, shaking the feelings of both Koyuki and Minato. In the middle of the story, Momoka's persistence wins out and she dates Minato, but she is eventually dumped. Uses polite language (desu/masu) with everyone except those the same age. Views people only in terms of merit and demerit. 1st Year at Meiten High School.

She has a cool personality and doesn't say much. At first, she gave a mysterious and scary impression, but she actually has a serious, otaku-like side. Akine Atakawa 1st Year at Meiten High School.

He has a flashy and gaudy appearance, but his personality is completely straightforward. He is friendly and approaches anyone without worrying about distance. While he seems bright and frank, he also has a sharp side that accurately reads the feelings and situations of others. Relationship with Koyuki: As childhood friends, they have a family-like relationship and are very close and comfortable with each other. Miki's younger brother. 1st Year at Meiten High School.