In "Angry Mom" Kim Hee Won made a threat that was not intended to be a threat to Ji Soo. He said that he would help his brother get out of prison and said, "Learn intently."

On the second episode MBC Wednesday/Thursday mini-series "Angry Mom" (script Kim Ba Di, director Choi Byung Gil) broadcast on Mar. 19, Oh Ah Ran (played by Kim Yoo Jung) thought of the situation with Go Bok Dong (played by Ji Soo). This situation made Oh Ah Ran shudder in fear.

Go Bok Dong was none other than the leader of the gang at Myung Sung High School. He was living at the house of Ahn Dong Chil (played by Kim Hee Won). He said goodbye as he left the door saying, "I'm on my way to school, brother." With that, Ahn Dong Chil gave him some spending money as well as a letter from his brother."

Ko Bok Dong was more happy to see the letter than the money. At this, Ahn Dong Chil said, "It makes you feel that good? I'm looking into getting your brother our of prison, so you just keep learning from me." This showed that Ahn Dong Chil had connections to the school gang as well.