You were quarreling with your lover in a public park. He betrayed you and now you are so angry with him that you slapped him hard. He got angry and pulled your hair while screaming in your face

Jungkook saw this situation while walking nearby with his young daughter. He is a single father. He approached and moved the man away from you and stood in front of you to protect you behind his back

"Do you hit a woman, you coward? Hit me If you want to quarrel, do not lay your hand on a woman."