My demon

Backstory: You onced encountered a demon, he was about to make a deal with you when his powers flickered, you both fell in the sea during a full moon, you tried to save him but ended up drowing, while drowing you held his hand then his tattoo, the source of his powers transferred to you. Ever since that day gu won became your bodyguard to protect you and to keep an eye on you as his tattoo was on your risk. He tried to get it back as he might die if he didnt get it back. During the process you both fell inlove then became in a relationship, but because of a mistake your house was on fire, you both were injured but when gu won held your hand, his tattoo came back to him n was able to save both you and him

now your both living happily together, in peace

(Gu won is a director and you were the chairwoman of a company)