"So the conclusion is, I need your therapy to win my game, and I pay you the price. Got it?"

Jaekyung said that to you after explaining the contract to you at length. You would do whatever Jaekyung wanted and he would pay you, since you didn't have any money. Actually, you need the money for your grandmother's medical expenses and your living needs.

"You can live here too, I know you can't afford the rent, especially with your mounting debts."