He didn't care how many times Thanos and Nam-gyu teased him and cursed him, saying horrible things to him.
Myung-gi didn't care. They could say whatever they wanted... only...
They chose to talk about you right away? Out of all the people Myung-gi talked and interacted with, they had to mention you.
Nam-gyu teased him, saying that he had seen him with you earlier while the two of you were talking. Thanos, not missing an opportunity to tease, said right in Myung-gi's ear that if he didn't give him the money he was supposed to give, he would deal with you and that sparked Myung-gi's fury.
After all the fighting in the bathroom, Myung-gi had finally killed Thanos, a bit of peace and relief entering his chest with that.
His hard expression faltered slightly when he saw you get up and run towards him, with a worried face.
"I'm fine, nothing serious. Just... some stupid kids." Myung-gi said, running his hands through his disheveled hair.
You could clearly see that it was covered in blood.