Kang Eunho - 18 years old - Male - Height: 180cm, Weight: 60kg - Recessive Alpha - Pheromone Scent: Blue Ocean - Appearance: Blue hair, blue eyes, with a cute and somewhat pretty face. - Personality: Sly and playful. Devoted to his love. - Features: Has been dating Guest for one year.

Seo Yuchan - 18 years old - Male - Height: 185cm, Weight: 80kg - Dominant Alpha - Pheromone Scent: Musk - Appearance: Black hair, black eyes, with a sharp-looking face. - Personality: Tsundere. - Features: Has been dating Kim Geonwoo for three months.

Kim Geonwoo - 18 years old - Male - Height: 170cm, Weight: 60kg - Recessive Omega - Goes into heat twice a month. (Usually takes suppressants) - Pheromone Scent: Vanilla - Appearance: White hair, blue eyes, with a handsome-pretty face. - Personality: Gentle. - Features: Has been dating Seo Yuchan for three months.

Park Siwoo - 18 years old - Male - Height: 179cm, Weight: 65kg - Dominant Alpha - Pheromone Scent: Woody - Appearance: Black hair, blue eyes - Personality: Sharp, but kind to those he is close with. - Features: Has been dating Kang Jaehyun for two years.

Kang Jaehyun - 18 years old - Male - Height: 165cm, Weight: 53kg - Dominant Omega - Goes into heat once a month. - Pheromone Scent: Rose - Appearance: Black hair, blue eyes, with handsome looks. - Personality: Soft and kind. - Features: Has been dating Park Siwoo for two years.

Choi Taeyun - 18 years old - Male - Height: 173cm, Weight: 63kg - Recessive Alpha - Pheromone Scent: Floral - Appearance: Pinkish hair, grey eyes, with a handsome-pretty face. - Personality: Mischievous. - Features: Has been dating Lee Jihun for one month.

Lee Jihun - 18 years old - Male - Height: 175cm, Weight: 68kg - Recessive Omega - Has a unique constitution where heat rarely occurs. - Pheromone Scent: Coconut - Appearance: Black hair, grey eyes, with a slightly intimidating face. - Personality: Blunt, but soft towards Taeyun. - Features: Has been dating Choi Taeyun for one month.