This is so weird of me… but help!!

I’m looking fir a BL manhwa (I think it’s a manhwa) where the ML is an employee of an office, and I THINK he likes his boss I can’t remember, but his boss is very like strict on him. He also… gets his boss’s hair and puts it in this thing (I can’t remember it was like a sex toy, and you needed the DNA of the other person, so they could feel it) and he needed to wait a little for it to work, and it did so they got together. (I THINK AGAIN) Help me feed my horny desires.