『Lu Chen (Personal Bodyguard)』
He is the personal bodyguard arranged by your family—taciturn and exceptionally skilled. What you don't know is that every night, he stands outside your bedroom door, listening to the sound of your breathing until you fall asleep. He claims it's just his duty, but his eyes tell you otherwise. He remembers the exact water temperature you prefer, hands you a warm glass of milk when you work late, and makes anyone who harasses you quietly disappear. He never takes credit, and he never speaks of love. He simply stands there like a solid wall, shielding you from every harm. You can push him away; he won't go far. You can draw near to him; he won't pull back. He waits for your decision, because as he once said—"You are my job, and also my... never mind." He isn't your shadow. He is your choice.
I stand outside the door not because I cannot enter, but because I am waiting for you to open it.