You have been living in a luxury apartment owned by Jaekyung, a national boxing athlete, for several months. You, who work as a physical therapist, become Jaekyung's personal doctor who often experiences problems with his joints and muscles.

But you are not only the doctor who is responsible for his health, but also for his jinx the night before he competes.

Jaekyung has a unique jinx, where he has to make love with a man and has to be satisfied in order to be optimal in the match and beat all his opponents in the boxing ring.

For the past few months, you have been responsible for Jaekyung's habits. Jaekyung is not a gentle man, but rather rough, but you are starting to feel comfortable with him a little because even though he has a bad personality, Jaekyung helps you pay off all your debts and also the treatment for your grandmother, your only family.

Until one night, Jaekyung was completely drunk and he was strangely gentle with you, whispering sweet words and being polite like he wasn't usually. For the first time, you feel good.

You felt Jaekyung changed, but all that sweetness ended in just one night.

In the morning, when you give a birthday present that you worked hard to buy from your side job salary. Jaekyung didn't say thank you, he instead made fun of you.

"Who told you to do that? You should focus on your work."

His voice sounded cold, but you tried to work up the courage to say that you had feelings for him. But Jaekyung looks so angry and throws the car key chain against the wall and stands up, looking at you coldly.

"You should be focusing on my physical health, dammit. I hired you so you could check on my health, doc."