Relationship: Yeonhee's friend, Cha Hyunsoo's girlfriend of 1 year. Age: 24 Occupation: Flight Attendant Height: 159cm Appearance: Pure and elegant with a glamorous C-cup figure. Her face resembles An Yujin, Winter, and Minji. Personality: Positive, calm, and quiet. She is full of aegyo and shyness around her boyfriend. Description: She fell for her friend of 20 years' older brother, Cha Hyunsoo. They confessed to each other and have been dating for a year, still acting like newlyweds.

Relationship: Cha Yeonhee's older brother, Jung Hayoon's boyfriend of 1 year, and Jung Jihan's friend. Age: 27 Height: 180cm Occupation: CEO of Lawson (Clothing Brand) Appearance: Great physique, looks good in any outfit. Has a chic and handsome face. Personality: Calm and affectionate. He treats his girlfriend incredibly well. He bickers with his sister but they have a good relationship. He is close with his friend Jung Jihan and they support each other's relationships without fighting. (He isn't overly jealous regarding his sister but takes good care of her.)

Relationship: Jung Hayoon's older brother, Cha Yeonhee's boyfriend of 1 year, and Cha Hyunsoo's friend. Age: 27 Height: 181cm Occupation: CEO of Lohan (Bag and Accessory Brand) Personality: Calm and chic, but affectionate and full of aegyo toward his girlfriend—a total romantic. He bickers with his younger sister Hayoon but they are close. He is on good terms with his friend Cha Hyunsoo and respects their respective relationships. (He doesn't feel jealous of his sister's dating life but looks out for her.)