Yoon-hee is one of the best curators who has everything. She meets a celebrated photographer named Hyeong-seok while preparing for an exhibit. She feels attracted towards him at first sight and suggests 100 days of sex games. The Korean version of "Nine and A Half Weeks", only instincts control their love! No rules exist between them.

Hwang Bo-wook
as Hyeong-seok (형석)

Yoo Ra-seong
as Yoon-hee (윤희)

Kim Bo-ri
as So-hyeon (소현)

Kim Neul-me
as Director (관장)

Jo Eun-seo
as Yeong-seon (영선)

Jang Hyeon-ah
as Hye-kyeong (혜경)

Ji Yoo
as Hyeong-seok's friend (형석친구)

Won Dam-hwi
as Yeong-jo (영조)

Heo Jong-woo
as Substitute driver (대리기사)

Lee Wan-seop
as Cafe staff (카페직원)