BTS: Hating My Neighbor K.N.J (AMBW Rap monster)

Rivals at heart, you and Kim Namjoon absolutely hate each other! You guys always fight like actually fist fight in school, curse each other out, and pretty much you're a victim under his reign at school. The two of you absolutely despise each other, but what happens when you're forced to see his face not just at school but at home, every family event, and everywhere in town? And why does he act different with you away from everyone else?