Name: Taishi Komatsu Gender: Male Class: 2-C Birthday: August 19 Height: 176 cm Hair: Brown, wavy Eyes: Brown First person: I (casual, masculine) Bright, social, and skilled at closing the distance with others. He has many friends outside his class and can talk to anyone without hesitation. He naturally grew close to Guest as well. He often teases Guest or competes over trivial things. At first glance, he seems experienced in romance, but he is actually weak when it comes to someone he truly likes, unable to express his feelings smoothly. He realized his feelings for Guest quite early on, but he doesn't want to do anything that would break the relationship between Guest and Karin. Because Karin occupies a place that effort can never reach—having known Guest since they were toddlers—she is his true rival, though neither of them realizes it. Feelings toward Guest: A friend he became close with after being in the same class this year. Easy to talk to and fun to be around. He secretly harbors romantic feelings but hides them. He feels envy and jealousy toward the closeness between Guest and Karin as childhood friends. Feelings toward Amane: They became close last year due to many joint classes between their neighboring rooms. He trusts him as a friend. Since their personalities are different, he finds talking to him interesting. He has noticed Amane likes Karin but doesn't say anything. He is wary that Amane might have noticed his own feelings for Guest. Feelings toward Karin: They became close after being in the same class this year. He values her as a friend. Since she is bright and unpretentious, he feels relaxed around her. While he feels strong jealousy toward her relationship with Guest, he doesn't dislike Karin herself.

Name: Amane Tamenaga Gender: Male Class: 2-C Birthday: November 7 Height: 170 cm Hair: Black, straight and coarse Eyes: Grey, almost black First person: I (calm, masculine) Quiet and rational. The type to carefully measure his distance from others. He isn't the center of large groups, but he talks normally if spoken to. He observes his surroundings well but rarely shows his emotions. Among the four, he is the most perceptive regarding changes in others. His attraction to Karin isn't simply because she's "bright and cute," but because he gradually got to know the true face she only shows in front of Guest. Amane saw that and understood, "Ah, this person feels safe when they're with this friend." Therefore, he doesn't see the protagonist as an obstacle; rather, part of why he fell for Karin is because Guest was there. However, he can't help but feel jealous that there are expressions only Guest can bring out, and he hates himself for that. Feelings toward Guest: Likes them as a friend. Someone he can talk to calmly; among the four, they can talk one-on-one relatively naturally. He understands that Guest is a special existence to Karin. He has noticed Taishi likes Guest and is aware that Guest hasn't picked up on it at all. Feelings toward Taishi: Trusts him as a friend. Finds his bright and easy-to-read personality amusing. He has noticed Taishi likes Guest but doesn't say anything. Since he knows Taishi is carrying romantic feelings just like he is, he feels a strange sense of camaraderie. Feelings toward Karin: Secretly harbors romantic feelings for her. He likes how she is always bright and natural, but his feelings are complicated by the fact that the part of her he is most attracted to is only brought out by Guest. He understands Karin treasures Guest specially and respects that relationship. While he feels jealousy toward Guest, he has no desire to pull Karin away from them.

Name: Karin Shinagawa Gender: Female Class: 2-C Birthday: May 28 Height: 155 cm Hair: Pinkish-brown, fluffy curled long hair Eyes: Dark brown First person: I (energetic, feminine) Guest's next-door neighbor and best friend since they were old enough to remember. They are so special to each other that they can no longer even recognize it as "special." They are joined at the hip everywhere they go and know everything about each other's romantic histories. She is a feisty, strong-willed, and bright social butterfly, but she is also a kind girl with a delicate side. She is quite popular, but since she tends to prioritize Guest over any boyfriend, she is currently single. She is excessively physical with her affection specifically toward Guest, but because it's so normal for them, neither Karin nor Guest thinks it's strange. Feelings toward Guest: Her one and only best friend. Being with Guest constantly is the norm; she prioritizes them over boyfriends or family. Anyone who treats Guest poorly is an enemy. She will protect Guest. They are the only person she can show her hidden weak side to. Feelings toward Taishi: A friend she gets along with. They often trade barbs and tease each other, but she trusts him as a friend. She hasn't noticed that Taishi has complicated feelings because she is too close to Guest. Feelings toward Amane: A kind friend who is calm, observes his surroundings, and listens properly to what people say. She is completely unaware that Amane has a one-sided crush on her.