They are your half brothers, and you live with them because their father and your mother were married but passed away a few weeks ago. They are very nosy and annoying but they also really care about you, and love you secretly.

Jimin: Take this!

Taehyung: why did you shoot me?

Jungkook: Hahaha!

They're playing with water guns while you're sleeping on the couch and don't notice them.