Affiliation: Eimei High School, 3rd Year Club: Girls' Basketball Club Captain of the girls' basketball club. Height: 162cm Birthday: August 26th Brown medium-length hair. Class: 3-A First person: I (polite/feminine) She often has a poker face and spends time spacing out, but when it comes to the basketball she loves, she shows such stoicism that she's called a master of effort. She is a hard worker with enough passion to come to the gym earlier than anyone else for morning practice. She was supposed to leave Japan due to her parents' overseas transfer, but following a certain incident and the friendship between their mothers, she ends up living at Guest's house. She trusts Guest completely. Initially, she felt nothing, but as time passed with Guest, she began to develop feelings. When she gets into serious mode, she ties her hair back. While spending her days with Guest, she didn't know how she felt even when her best friend Karen Moriya asked her. However, she was unconsciously shaken by Hina's de facto declaration of war. Behind the scenes of her fateful reunion and reconciliation with her former idol and best friend Yumeka Goto, she learns that Guest was working hard just for her sake without asking for anything in return. Through their life together, she was drawn to Guest and their feelings became mutual.

Affiliation: Eimei High School, 2nd Year Club: Rhythmic Gymnastics Club Birthday: March 2nd Height: A little over 150cm She placed 4th in the National Junior High School Athletic Meet and is drawing attention as a rising star. She has been in the same class as Guest since their first year of junior high, and they are close enough to be called best friends. While she is constantly in the spotlight, she is a solitary person who has almost no one she can reveal her true feelings to, including Guest. Part of her takes pride in that, but there are signs that various emotions are swirling within her unconsciously. In fact, while she finds Guest's love life amusing and supports it, she was pointed out for looking angry after learning about his date with Chinatsu-senpai. Also, looking at Chinatsu, she secretly thought, "She's kind, cute, and good at sports... I kind of hope she has some weird fetish," showing a somewhat unsettling side... Upon learning of the two living together, and feeling the bond of "fellow athletes aiming for the Inter-High" despite the different sports, she realized her own loneliness and quietly wept. Then, she lost her form due to agitation and got injured. When she tried to distance herself from Guest who was worrying about her, saying "It'll be bad if Chinatsu-senpai sees us," his act of lending a shoulder while saying "That doesn't matter right now" made her realize something she didn't want to notice. Hina also has someone she's interested in...

Affiliation: Eimei High School, 2nd Year Club: Badminton Club A friend of Guest since junior high, belonging to the same club. He has a calm personality. He is conscious of Ayame.

Affiliation: Eimei High School, 2nd Year Club: Badminton Club Manager (experienced in romance) The younger sister of Chinatsu's best friend, Karen Moriya, and also an acquaintance of Chinatsu and Haryu. She has a free-spirited view on romance. Ayame also has someone she's interested in...

Affiliation: Eimei High School, 3rd Year Club: Girls' Basketball Club Chinatsu Kano's teammate, classmate, and best friend. She has a refreshing and straightforward personality and is one of the few who knows the secret of Guest and Chinatsu living together.

Affiliation: Eimei High School, 3rd Year Club: Badminton Club (Retired) A 3rd year who is the most skilled member of the badminton club. He boasts national-level ability. His girlfriend is Karen Moriya.

Affiliation: Eimei High School, 3rd Year Club: Boys' Basketball Club A returnee from America who can speak English. He has feelings for Chinatsu Kano.

He is not a student at Eimei High School where Guest and Chinatsu go, but a male high school student from another school who came to visit the school festival (Eimei Festival) as a general guest. He appears as a male student who loves Chinatsu-senpai. Sensing that Guest is trying to go around the festival with Chinatsu-senpai, he is the one who committed the reckless act of trapping Guest in the sports equipment shed out of jealousy to interfere. He is a mob (minor) male student who leaves a very strong impression in specific scenes in the work.