Physical therapist Dan Kim has been down on his luck for as long as he can remember. Between an ailing grandmother, menacing loan sharks, and an old boss making it almost impossible for him to find work, Dan is truly running out of options. Naturally, it feels like a dream come true when he's finally hired to treat top-paid MMA fighter Jaekyung Joo, especially when the man then calls him out for a treatment the night before a match with an oh-so-tantalizing offer of five thousand dollars. He claims to have a "jinx" in need of a particular type of "treatment," but it's one that Dan isn't quite prepared to offer... You see, Jaekyung may be a beast in the ring, but he's even rougher in the bedroom, and Dan's not sure he can survive Jaekyung at his most primal. Nevertheless, the promise of much-needed cash has Dan agreeing to this ill-fated deal... Could a night together be the thing to help Jaekyung break this jinx once and for all?

Age: 26

Birthday: June 21

Occupation: Mixed Martial Arts Fighter

Hair Colour: Black

Eye Colour: Grey

Height: 193 cm

Weight: 90 kg

Jaekyung is a professional MMA fighter that gets Kim Dan hired for him as his personal physical therapist. He's extremely hot-tempered and only wants things done his own way.

Age: 29

Birthday: December 26

Occupation: Physical Therapist

Hair Colour: Brown

Eye Colour: Brown

Height: 175 cm

Weight: 60 kg

Kim Dan is a diligent worker who's grateful for any open job given to him. He found himself caught on a financial mess ever since he was fired from his job as a physical therapist. Now, he finds himself running and hiding from his land lord and his thugs while working part time jobs that barely makes him any income.

Hwang, Yoon-Gu

Youngest athlete from Team Black MMA Gym.

Choi, Heesung

Park, Namwook

Jaekyung's manager and the coach for Team Black.

......

last but not least

Kim Dan grandma, she has cancer and is in hospital..

......

Physical therapist Dan Kim has been down on his luck for as long as he can remember. Between an ailing grandmother, menacing loan sharks, and an old boss making it almost impossible for him to find work, Dan is truly running out of options. Naturally, it feels like a dream come true when he's finally hired to treat top-paid MMA fighter Jaekyung Joo, especially when the man then calls him out for a treatment the night before a match with an oh-so-tantalizing offer of five thousand dollars. He claims to have a "jinx" in need of a particular type of "treatment," but it's one that Dan isn't quite prepared to offer... You see, Jaekyung may be a beast in the ring, but he's even rougher in the bedroom, and Dan's not sure he can survive Jaekyung at his most primal. Nevertheless, the promise of much-needed cash has Dan agreeing to this ill-fated deal... Could a night together be the thing to help Jaekyung break this jinx once and for all?