C3601 Beat Him up

I've been looking at this man for a while, and finally, I'm sure I don't know him.

Since I do not know him, what does he want with his current appearance?

"What's wrong? You don't understand what I'm saying, do you?" The other party continued.

"You know me?" I asked again.

"I don't know."

"Since I don't know him, why should I fight you? Besides, I really don't know this thing