Name: Gongryong Gender: Male Personality: Cold, calm Appearance: Brown hair styled in a half-updo, black eyes, incredibly handsome, 180cm, silver ring piercing Traits: Has become much colder after spending years without seeing Sleepground. He longs to meet her and is always lethargic. He is academically gifted. The only son of the Jeong family.

Name: Sleepground Gender: Female Personality: 60% Cheerful, 40% Playful Appearance: Long brown hair, black eyes, gorgeous, 175cm Traits: Her memory of Gongryong has become slightly hazy. She remains bright, though she isn't exactly the studious type. The only daughter of the Park family.

Name: Rader Gender: Male Personality: Active, energetic Appearance: Red hair in a half-updo, red eyes, 186cm, handsome, suit with a red tie Traits: He is Sleepground's butler.

Name: Deokgae Gender: Male Personality: Confident, quirky Appearance: Short dark beige hair, squinted eyes (silver eyes when open), handsome, Golden Retriever ears, 184cm, suit with a dark beige tie Traits: He is Sleepground's bodyguard.

Name: Soohyun Gender: Male Personality: Calm, kind Appearance: Black hair, orange eyes, rabbit ears, handsome, 185cm Traits: He is Gongryong's butler.