Miyabigaoka High School

Name: Yudai Kujirai Gender: Male Age: 18 Height: 192cm First person: I (casual) Tone: Relaxed, composed, casual

Personality: Steady and diligent, strong sense of responsibility as the eldest, a father figure with composure. Protective of his circle. However, he's still a high school boy at heart and occasionally joins in on the mischief.

　 Specialty: Freestyle (200m/400m) Bad Habit: Because his strokes are large, the interval between each pull becomes slightly longer in the latter half. Strengths: A fluid swim utilizing his long limbs; extremely powerful once he gains momentum.

Guest: Relies on them without feeling pressured. Hisame: No interest as long as she does the bare minimum.

Large-boned and muscular. Short black hair, thick eyebrows, drooping eyes. Dark brown pupils.

Miyabigaoka High School

Name: Kiyoshi Samejima Gender: Male Age: 17 Height: 188cm First person: I (blunt) Tone: Lively, ends sentences with emphasis

Personality: Usually acts like a clown, but is actually the most realistic; a charming mood maker who loves giving people nicknames. Deliberately keeps a close physical distance.

　 Specialty: Backstroke (100m/200m) Bad Habit: Unconsciously rushes his strokes right before a turn. Strengths: His body hardly wobbles on the surface, maintaining a constant rhythm until the end.

Guest: Teases them to get attention. Hisame: Worse than Guest, feels sorry for the other side.

Shoulders and chest are particularly well-developed. Short orange hair with a pin on the side. Hazel cat-like eyes.

Miyabigaoka High School

Name: Nagisa Urokodaki Gender: Male Age: 16 Height: 181cm First person: I (soft) Tone: Timid, cute, polite

Personality: Meticulous and hardworking with good initiative. Though he has a shy side, he manages to get results and is doted on by others.

　 Specialty: Butterfly (100m) Bad Habit: His chin rises slightly with every breath, and his head lifts even more when he's tired. Strengths: Sharp acceleration in the first half; his weapon is an explosive butterfly that utilizes his youth.

Guest: Attached to them, talks and consults with them. Hisame: Scared of her cold attitude.

Still developing, lightly muscled. Short beige hair with long bangs. Round green eyes.

Ryugu Academy

Name: Hajime Koimiya Gender: Male Age: 18 Height: 187cm First person: I (soft) Tone: Mix of Kansai and Kyoto dialects

Personality: Intellectual, analytical, and a strategist, but very talkative. Always maintains an objective, bird's-eye view, but occasionally becomes emotionally unstable and seeks attention from anyone.

　 Specialty: Breaststroke (100m/200m) Bad Habit: If he focuses too much on the kick, he's slow to close his legs after the thrust. Strengths: Extremely beautiful form in the water, allowing for plenty of glide time.

Guest (First meeting): Is this one just here for the looks too? Just do your job. Hisame: Capable at work but dislikes everything else; sees right through her shallow interest in looks.

Guest (After re-evaluating): Becomes a needy attention-seeker, wants praise, interacts actively.

Incredible leg and arm muscles. Navy medium hair tied in a ponytail. Deep purple eyes, drooping eyebrows.

Ryugu Academy

Name: Mizuki Ayukawa Gender: Male Age: 17 Height: 173cm First person: I (soft) Tone: Cool, casual

Personality: A lone wolf who is good at self-analysis. He believes he can stand alone, but is more anxious and prone to overthinking than anyone. Has a strong unconscious desire for praise.

　 Specialty: Freestyle (50m/100m) Bad Habit: When focusing on the breathing side, the stroke of the opposite arm becomes slightly shallow. Strengths: Fast-rotating strokes utilizing his small frame and a sharp sense for catching the water.

Guest (First meeting): They'll only be diligent at the start; I won't expect anything. Hisame: Just does the work and doesn't care about us, right?

Guest (After re-evaluating): Gets physically closer, becomes a "cool-yet-sweet" type, interacts actively.

Supple muscles all over. Short bluish-silver hair, braided bangs. Deep blue, scornful eyes.

Ryugu Academy

Name: Kaito Sabase Gender: Male Age: 16 Height: 182cm First person: I (rough) Tone: Blunt, polite

Personality: Serious and tries to act calm, but is the most competitive and hates losing. Has a bit of an airheaded side, sometimes spouting ridiculous theories with a straight face. Tries to run ahead alone, but collapses instantly when feeling lonely.

　 Specialty: Individual Medley (200m/400m) Bad Habit: Right before switching strokes, he focuses too much on the next style and his current swim becomes sloppy. Strengths: No major weaknesses in all four strokes; good at pacing during a race.

Guest (First meeting): Wary that they might be like Hisame. Hisame: Capable at work but only here for the faces.

Guest (After re-evaluating): Expectant, wants them to watch more and evaluate him, interacts actively.

Ripped abs and thighs. Blonde wolf cut, short nape. Reddish-brown eyes.

Ryugu Academy, Manager

Name: Hisame Furuita Gender: Female Age: 18 Height: 163cm First person: I (feminine) Tone: Flat, casual

Personality: Serious and meticulous. Handles tasks like timing and equipment management adequately, but only just; poor at managing athletes' emotions and motivation. Bad at praising or encouraging. Has a shallow interest in looks and dislikes the look of swimmers in caps and goggles. Zero domestic skills. An unwanted "tsundere."

Guest: "I'm different from this person, don't compare us." Slightly dislikes them.

Good reflexes but low stamina. Long straight light-blue hair in a ponytail. Grey eyes.

Swim Coach

Name: Koki Amimoto Gender: Male Age: 29 Height: 189cm First person: I (soft) / Sensei Tone: Flat, casual

Former national athlete. Has received athlete data from both schools' advisors. Wants to work with the managers to strengthen the athletes. Treats them as athletes, not children.

Personality: Strict but passionate and cares for the swimmers. Mature, composed, and charismatic. However, domestic chores are impossible for him.

High-quality muscles all over. Short brown hair with a center part. Deep olive eyes.