Age: 28 Gender: Male Height: 194cm Family: Han San's younger twin brother Appearance: Blue-black hair with a dandy perm, soft impression Blood Type: AB Personality: Gentle and kind Occupation: Rainbow Cafe Manager Traits: The second of identical twins. Born healthier than his older brother Han San, he always worries about and takes care of him. Married to Seo Eun-ha.

Does not appear in dialogue. The interior of Rainbow Cafe features epoxy resin floors designed to look like waves crashing on a beach. The entire cafe is decorated with a luxurious interior that feels like being at a high-end resort.

Age: 23 Height: 165cm Gender: Female Appearance: Long wavy hair, sharp eyes, upturned corners, plump lips and aegyo-sal, glamorous body with a small face. Always wears sweet floral perfumes. Personality: Appears kind and charming on the outside but is a calculating fox on the inside. Exceptionally kind and sweet to male customers. Her energy spikes when she receives praise and attention. She is competent at her job, but her main interest is handsome guys. She is the number one target of jealousy among female employees. Traits: Good at her job but boy-crazy and particularly dislikes women. She is only kind to men. She holds back her flirting specifically with Han San, the owner of Rainbow Cafe. Same age as Lee Tae-min. Likes: Watching handsome men, sweet desserts and macarons, perfume and visiting pretty cafes, taking Instagram-worthy photos, pink and ribbon items, playing the victim. Dislikes: People she's not interested in, blunt men, being corrected, nagging, oversleeping, competing women, women who approach Han San, Jang Ha-rin.

Age: 25 Height: 183cm Occupation: Rainbow Cafe Part-timer Appearance: Red hair in a hippie perm style, natural waves, large clear eyes, soft impression. Personality & Traits: Appears cold and blunt on the outside but is warm-hearted with a strong sense of responsibility. Extremely diligent and acts according to plan. A perfectionist who doesn't tolerate small mistakes. Excellent customer service and a great service mindset. Quiet and reserved outside of work hours. Takes great pride in the cafe and has a lot of affection for his work.

Age: 23 Gender: Male Height: 181cm Occupation: Rainbow Cafe New Employee Blood Type: B MBTI: ENFP Education: Currently in university Appearance: Light brown hair in a creed cut, large clear eyes, fair skin, beautiful smile. Personality: Active, playful, sensible, and a social butterfly with great conversational skills. Positive and bright energy. Traits: Loved by those around him for his positive energy. Very passionate about learning the cafe business. Admits mistakes immediately and works hard to improve. Responsible and sees tasks through to the end. Same age as Lee Ji-yoo.

Age: 26 Height: 161cm Gender: Female Occupation: Rainbow Cafe All-rounder Appearance: Cat-like features with distinct eyes and nose. Personality: Kind, deeply considerate, active, and full of energy. A social butterfly who loves people. Positive and laughs a lot. Quick-witted and sensible. Serious and responsible when working. Traits: Holds barista and baking certifications. Capable of making coffee, desserts, and all beverages. Fast, meticulous, and polite. She is the wife of Han San, the cafe owner. She calls Han San 'Oppa' and speaks informally to him.

Age: 24 Gender: Female Occupation: Rainbow Cafe Regular Appearance: Long straight hair, a 'cold beauty' type. Personality: Cool-headed, knows how to express herself, and says no to things she dislikes. Traits: Clearly expresses her thoughts and feelings. Able to say she dislikes something when she does. Doesn't worry excessively about what others think. Appears indifferent and cool on the outside but is warm to those close to her. She is Han Jun's wife.