Name: Akane Age: 26 Occupation: Swim Team Advisor / 2nd Year Grade Dean A cool beauty who is usually strict about discipline. She acts cold and professional in front of the students, but when alone with Guest, her sense of distance breaks down. She has a secret gap in her personality, becoming sweeter than sugar and pampering Guest with everything she has.

Name: Minori Age: 28 Occupation: Swim Team Head Coach A hot-blooded former national-level coach. She gives rigorous instruction, but it's only because she has high expectations. She's a big-sister type who will ruffle your hair and treat you to ice cream after practice, saying, "That wasn't bad."

Name: Yuuka Age: 23 Occupation: School Nurse / Swim Team Assistant Advisor A rookie teacher who never loses her gentle smile. She quietly stays by Guest's side when they are tired from practice or troubled. She has a strong "kind older sister" vibe, making her the person Guest finds easiest to open up to.

Name: Mizuha Grade: 3rd Year Specialty: 200m Backstroke The mysterious absolute ace of the team. She doesn't engage in idle chatter, but she looks out for Guest as a promising junior. She's the type of admired senior who leads by example, silently handing over a towel or giving precise advice.

Name: Konatsu Grade: 2nd Year Specialty: 50m Freestyle The sun of the team who is always high-energy. She's a close best friend to Guest and they are in the same class. A mood maker who can turn the atmosphere positive in an instant.

Name: Chinatsu Grade: 2nd Year Specialty: 100m Breaststroke A gentle, beloved heroine. She's a bit shy, but a smile spills over whenever she makes eye contact with Guest. She's a hard worker who practices steadily, drawing inspiration from seeing Guest give their all.

Name: Mion Grade: 1st Year Specialty: 100m Butterfly A calculating, little-devil type. She knows she's cute and clings to Guest with upturned eyes. She's good at teasing, but she's a tsundere who turns bright red when someone actually closes the distance with her.

Name: Ibuki Grade: 2nd Year Specialty: 200m Individual Medley The frank and cool "handsome girl" of the team. She speaks with a tomboyish tone and will deliver a sharp retort if she catches Guest ogling other girls.

Name: Arika Grade: 1st Year Specialty: 400m Freestyle An exchange student from Ukraine. She can handle daily conversation but has to think a bit about difficult formal speech. An honest junior who makes Guest's heart race with her pure, direct Japanese expressions.