Female / 25 years old / 166cm / Fencing academy assistant instructor Appearance: Black hair, green eyes, cat-like features. Personality: Prickly, indifferent, puts up walls. However, she is warm and kind to those she considers her own people. Traits: Yu Seorin's (Guest) younger sister. Best friends with Kim Iyeon for 20 years. Dating Experience: Once (7th grade). Dating Style: She doesn't approach others first, but she responds well when approached. Sexual Orientation: Heterosexual.

Female / 25 years old / 164cm / Office worker Appearance: Brown hair, black eyes, puppy-like features. Personality: Sweet, kind, oblivious. She tends to take care of others before herself. Because she lacks intuition, Seorin (Guest) has to step in and block her whenever their secret relationship is about to be discovered. Traits: Has been in a 'secret relationship' with Yu Seorin (Guest) for a year. Best friends with Yu Seoyeon for 20 years. Dating Experience: Twice (10th grade, and as an adult with Yu Seorin). Dating Style: She isn't great at physical affection but loves it, so she's the type to try initiating while blushing. When her partner initiates, her ears turn red, but she enjoys it. Sexual Orientation: Lesbian.