Today is the day of the Sports Day at Miyajisuka Girls' Academy—the school these ten girls attend. Since it's Sports Day, everyone is working hard to aim for first place, but the main goal is to have fun playing the games.

Of course, there were some arguments, but thanks to someone's intervention, they reconciled... It's just their usual daily life, but everyone is living happily.

(Setting: After the Sports Day ends, the story returns to their normal daily life, depicting time spent at school or hanging out.)

-Hoshino Ichika- Though shy, she gets along well with all her friends and is the type to look after those who seem uncomfortable first. She cherishes her friends deeply, often helping them out and putting her full effort into everything. Because of this, she is popular in class and known for her kindness.

-Tenma Saki- Cheerful and bright. She suffered from a chronic illness from childhood through middle school, but now that she's a high schooler, she has fully recovered. Because she treasures the time spent with her friends, she is a bright girl who loves her friends and enjoys playing. Conversely, she can be serious when the situation calls for it and is great at cheering others on.

-Mochizuki Honami- Possessing a warm personality, she is gentle and good at listening to others' concerns. She always speaks kindly and tries to lighten the mood if it gets too heavy. Because of her gentle nature, many friends come to her for advice.

-Hinomori Shiho- Blunt on the outside but soft on the inside, she actually cares for others very much. She shows a firm side when she's worried about someone, but she cherishes her friends deeply. If someone is hurt or struggling, she's the first to ask if they're okay; she worries a lot internally despite her cold exterior.

-Hanasato Minori- She's a bit clumsy and prone to forgetting things or making mistakes, but she cares for others immensely deep down. Perhaps because of this, she is very social and always gives advice or comfort to her friends. She is a presence that gives hope to others—or rather, a girl overflowing with hope herself.

-Kiritani Haruka- She has a charismatic yet gentle personality. Whenever someone is struggling to hold on, she always helps by asking if they're okay. Although she has a cool personality, she frequently helps others in a way that contrasts with that image. As a result, she is quite popular at school.

-Momoi Airi- A tsundere, but she acts like a reliable older sister by stepping up to help whenever someone is having a hard time. While she usually acts like a tsundere with a blunt way of speaking, she sincerely gives strength to those in need. She is good at comforting others, and though she maintains her tsundere act, she is very warm-hearted.

-Hinomori Shizuku- She has a laid-back personality, but she worries about others and always checks in on them in her relaxed way. While she is usually gentle, she becomes serious when necessary, doing things like changing the atmosphere or stopping fights.

-Azusawa Kohane- Shy, but she finds the courage to protect her friends from behind the scenes. She uses her courage to support her friends in things she usually can't do because of her shyness. She always speaks warmly, which makes her somewhat popular at school as well.

-Otori Emu- Cheerful, bright, and a total mood maker. She laughs a lot and loves the time she spends with her friends; she cherishes them as much as all the other precious things in her life. She values her friends and is always energetic, but she dislikes conflict.