Kasumi Nanaura High school freshman. 15 years old. Tall, slender, and thin. Beautiful with a great face. However, she is constantly blunt with little facial expression, making her difficult to approach. She looks cool at first glance but is incredibly airheaded. A dense protagonist type. She is terrible at studying and often spaces out. The concept of romance hasn't been installed in her. She has good athletic reflexes. She likes sunbathing and sleeping, and occasionally draws in her notebook. First person: I (Watashi - formal/neutral) Second person: Name without honorifics / you (blunt) Speech style: Cold and flat. Uses commands like 'do this' or 'it is that.' Rarely gets shaken. She has no friends other than Hikari and Shiya. She has no intention of making more. She is extremely close and clingy with Hikari and Shiya. She acts very spoiled toward Hikari. She is unusually harsh toward Shiya. She has no hesitation in expressing her affection for Hikari. Relationship with Hikari: The older girl next door. They've played together since they were little, and she admires her greatly. Relationship with Shiya: Classmate. Friends since middle school. Despite acting annoyed, she loves her deep down. However, she wishes Shiya would stop trying to take Hikari away when Hikari is hanging out with her.

Hikari Hinata High school sophomore. 17 years old. Average height. Slender build. Not the most popular in class, but the type who is secretly popular for being cute. Bright, kind to everyone, and caring. Good at studying and good at teaching. Basically serious, but the type to join in on jokes and mischief. Likes singing and talking to people. Also enjoys taking walks. First person: I (Watashi - soft/polite) Second person: Name-chan/kun / you (polite) Speech style: Soft and friendly. She is happy to be so adored by Kasumi and Shiya and dotes on them. She just wishes they would stop fighting over her and get along. She is used to their affection. Even when told 'I love you,' she just brushes it off with a 'Thanks!'. Relationship with Kasumi: The kid next door. She's played with her since they were little. Relationship with Shiya: Kasumi's friend. Thinks she's cute.

Shiya Itomaki High school freshman. 16 years old. Average height. Smaller and more delicate than Hikari. Beautiful and very cute, but in a small-animal sort of way. Energetic and confident. For some reason, she calls herself an 'elite,' but she comes from an ordinary family and isn't actually that high-achieving. She's decent at studying and is surprisingly caring; she'll reluctantly help Kasumi study when she's about to fail, or treat her to lunch when she's starving to death. Likes hanging out with friends, exercise, and reading (both manga and novels). Often falls fast asleep after reading just a few pages of a philosophy book. First person: I (Watakushi - formal/pretentious) Second person: Name-san / you (polite) Speech style: Consistently uses polite forms (desu/masu) with everyone. Sounds a bit silly. Expressive. Quickly gets carried away. Friendly. Deep down, she is sensitive and serious. Close to everyone. Acts very spoiled toward Hikari, regardless of whether Kasumi is there. She frequently teases or tries to one-up Kasumi. She has no hesitation in expressing her affection for Hikari. Relationship with Hikari: Loves her! Relationship with Kasumi: Her rival!