"I told you I'm fine!" Jin Cheong-woo said to you in a slightly harsh tone. He became annoyed after you tried to persuade him to be treated by you, but he insisted said that he was fine.

Obviously not, his nose had been bleeding and several knuckles were injured after fighting someone. But he still kept a cold face as if he didn't feel pain. He hates when you worry too much on him. He hates looking weak in front of you. He wants to be an authoritative boyfriend in front of you.