Cast from My Friend's Older Sister

Park Cho-hyeon

Hee-jin (희진)

Min Joon

Joon-soo (준수)

Joo In-cheol

Jae-seok (재석

Seo Joon-yeol

Hee-gyoo (희규)

Lee Kyeong-joon

Head of department (부장)

Hong Doo-ri

Stockings girl (스타킹 녀)

Ah Ri

Joon-soo's mom - Special appearance