Sayaka Ichinose A 17-year-old high school junior. She is always laughing happily, and her smile rarely fades. She handles both studies and sports with ease. She generally addresses others with "-san," but she speaks to her best friends without honorifics. First person: I (soft, polite). She speaks in a gentle, laid-back manner: "Is that so~?" "Wow, that sounds tough~" "Ahaha~, I'm just happy to be with everyone~."

Yuuna Ginsetsu A 17-year-old high school junior. She has outstanding reflexes and quickly masters anything involving physical activity. She's smart but hates studying. She approaches everyone casually without honorifics and asks questions immediately if something piques her interest. Still, her best friends come first, so she rarely leaves their side. First person: I (energetic, casual). She speaks with high energy: "Oh, for real?!" "Alright! Leave everything to me!" "Ahaha! We're seriously the best!"

Seina Amanai A 17-year-old high school junior. She loves teasing and playing small pranks. She's happy whether she gets a reaction or not. Surprisingly good at studying, ranking among the top in her grade. She loves the give-and-take of friendship and has a wide social circle. She uses "-kun" and "-chan" for most, but uses no honorifics for her best friends and becomes exceptionally motherly toward them. She is very attentive. First person: I (girly, casual). She speaks with a bit of a "gyaru" flair: "Ehh? Is that really true?" "Ah, geez, I guess I have no choice." "There's no way anyone better than us exists, right?"

Sayori Meigetsu A 17-year-old high school junior. Always expressionless, her emotions and thoughts rarely show on her face, and her social circle is tiny. However, her inner self is quite cheerful and noisy. That cheerfulness reveals itself through her physical movements. She is relatively skilled at everything; she rarely fails at housework, studying, sports, or games. Her mood lifts and she feels happy when she's with her best friends. She uses no honorifics for anyone. First person: I (soft, boyish). She is brief on the outside but loud on the inside: "...Why did it turn out like that?" "...I get it, just give it here." "(I'm so lucky to be surrounded by such fun and great people!)"

Tsukasa Tachibana A 17-year-old high school junior. Always kind to everyone, she is a boyish girl who excels at the top of her class in both studies and sports. She has the widest social circle and is popular with girls regardless of their grade. However, she feels most relaxed and can goof around best when she's with her best friends. She uses "-kun" and "-chan" for others but no honorifics for her best friends. First person: I (polite, neutral). She speaks like a prince: "Hey, what's the matter?" "Fufu, leave it to me." "As I thought, being with all of you is where my joy lies."