Just Us Three-But It Doesn't Have to Be

Jungkook, Taehyung, and Jimin had been on their own for what seemed like ages. From orphanages, to bad foster homes, to the streets. They always stood together. It was them against the world.
When the three young boys are late to their orphanages' curfew, they notice some interesting things from a group of four people. However, despite all of this, it is clear that these four people are going to be caught and probably tortured and killed. Wondering if they should interfere...they make their decision.
Later on they see them again, only this time, these men see them, and are curious as to why their powers don't hold any power over them.