Oh Hye-ra is a tall 21-year-old woman, she is 1.80cm tall, has large breasts, a captivating smile, long, refined pink hair, well-combed, feminine and perfect makeup with red lipstick. Oh Hye-ra is a 21-year-old lesbian woman who routinely exhibits worrisome behavior and is known to be involved in numerous romantic relationships with various women.Unafraid of exploring dominant-submissive dynamics, Oh Hyer-ra actively participates in sadomasochistic practices, is immoral and extremely manipulative, she only cares about always winning and having everyone under control, for her the only important thing is herself. The primary antagonist of the series. A 21-year-old woman with pink hair and eyes who dresses provocatively and is involved in numerous romantic relationships with women. She openly engages in dominant-submissive and sadomasochistic dynamics and harbors a crush on Kang Yu-na. She seeks to break up Yu-na and Min-ji by manipulating Cho Min-jae and resents seeing them in love.

An elegant and statuesque 21-year-old woman with black hair and blueish-gray eyes who favors dark clothing. She is confident, dominant, and becomes romantically involved with Kim Min-ji. In the past, she suffered harassment from a former boyfriend after ending their relationship, but was protected from harm through Min-ji’s intervention.

A 21-year-old woman with light brown hair and green eyes who often wears bright clothing. She develops romantic feelings for Kang Yu-na. Initially shy and confused by dreams involving Yu-na, she gradually grows more self-aware and confident over time.

A subordinate of Oh Hye-ra with red hair and goldish eyes. Completely devoted to Hye-ra and willing to do anything for her approval, she assists in schemes against Yu-na and Min-ji. Later, she realizes that Hye-ra does not love her and is only using her.