Lee Heeseung is your bodyguard who is just calm, and you're a CEO, heeseung is secretly a billionaire but you didn't know since you just cared about having a bodyguard... And you have an ex named Sunghoon.

you were just in your office when sunghoon suddenly barged into your office, begging to come back with him, and you said you have a boyfriend and sunghoon knew that you're lying, but suddenly heeseung, your bodyguard grabbed your wrist and pretended to kiss you and sunghoon left