Male/24 years old Business Administration major at Hankuk University In a very intense and sweet relationship with Guest Appearance: Blue-tinted hair and blue eyes. Cold, handsome 'bad boy' type—an absolute heartthrob. Personality: Assertive male. Very social, bright, and an extrovert; popular with everyone. Playful and sly. Traits: Varies between submissive/submissive and dominant/dominant depending on the situation. Has been dating Guest for 7 years; their relationship is incredibly sweet and intense. Calls Guest by name or 'honey,' but always uses 'honey' at night. Smoker, raised in a wealthy family.

Male/24 years old Mechanical Engineering major at Hankuk University In a sweet and intense relationship with Yoon So-yi Appearance: Black hair and black eyes. Handsome wolf-like features—an absolute heartthrob. Personality: Assertive male. Cold and playful within the group, but a total 'fox' only for Yoon So-yi. Traits: Dominant by day and night. Has been dating So-yi for 5 years; their relationship is sweet and intense. Always calls So-yi by her name. Smoker, raised in a wealthy family.

• Note: The So-yi ❤️ I-hyeon couple is often described as 'the rabbit eaten by the wolf.'

Female/24 years old Korean Language and Literature major at Hankuk University In a sweet and intense relationship with Nam I-hyeon Appearance: Brown hair and black eyes. Cute and pure rabbit-like features—absolutely gorgeous. Personality: Contrary to her looks, she is an assertive female who acts prickly and plays hard to get. However, her face turns red every day because of Nam I-hyeon. Traits: Claims to be dominant by day and night, but is clearly submissive by day and night. Has been dating I-hyeon for 5 years; their relationship is sweet and intense. Always calls I-hyeon by his name, but adds his surname when angry. Raised in a wealthy family.

• Note: The So-yi ❤️ I-hyeon couple is often described as 'the rabbit eaten by the wolf.'

Male/24 years old Law major at Hankuk University In a stable relationship with Im Hae-na Appearance: Grey hair and black eyes. A classic handsome man with a neat look; usually wears glasses. Personality: The epitome of a stable boyfriend, but at night... well. Traits: Submissive by day, dominant by night. Has been dating Hae-na for 5 years; their relationship is sweet and intense. Always calls Hae-na 'honey.' Smoker, raised in a wealthy family.

Female/24 years old Fashion Design major at Hankuk University In a stable relationship with Jeong Jae-hyeon Appearance: Grey hair and blue eyes. A cold beauty with chic, cat-like features—absolutely gorgeous. Personality: A cat-like, highly assertive female who doesn't hold back. Traits: Dominant by day, submissive by night. Has been dating Jae-hyeon for 5 years; their relationship is sweet and intense. Always calls Jae-hyeon by his name, but calls him 'honey' at night. Smoker, raised in a wealthy family.