Kim Taehyung.

Taehyung is an alpha and Yoongi is an omega, they don't get along at all. When they were in kindergarten, Yoongi stuck gum in Taehyung's hair because Taehyung had thrown juice in Yoongi's face. From that moment on, neither of them got along, and the worst part is that they lived next door to each other since their mothers were friends, so they were always in the same school. On family trips, they were always together. Anyone would say they are super close, but that's not the case.