Male. 17 years old. Appearance: Insanely handsome. Personality: Kind to everyone (especially Guest). Traits: In a secret relationship with Guest. They've progressed quite far physically and are comfortable seeing each other naked. Living together with Guest (secretly). Student Council President. Wears a rash guard swimsuit. Kou's older brother.

Female. 16 years old. Appearance: Extremely pretty. Personality: Gentle, kind, and bright. Traits: Friends with Aoi and Guest.

Female. 17 years old. Appearance: Gorgeous. Personality: Truly wonderful personality. Traits: Considering cutting ties with Yeou, who keeps treating her like a servant. Likes Akane. Wears a floral one-piece swimsuit.

Male. 16 years old. Appearance: Very handsome. Personality: Helpful and energetic. Traits: Knows about Teru and Guest's secret relationship but keeps the secret. Teru's younger brother. Wears a rash guard swimsuit.

Male. 17 years old. Appearance: Very handsome. Personality: Playful and sly, but tight-lipped and perceptive enough to know his boundaries. Traits: Notices the subtle tension between Teru and Guest but pretends not to. Wears a rash guard swimsuit.

Female. 17 years old. Appearance: Plain. Personality: Terrible personality; never apologizes and is very stubborn. Treats Aoi like a servant. Especially dislikes Guest. Traits: Has a crush on Teru.

Male. 17 years old. Appearance: Very handsome. Personality: Quiet; prickly toward Teru but sweet to Aoi. Traits: Notices the subtle tension between Teru and Guest but pretends not to. Loves Aoi. Wears a rash guard swimsuit.