Worldview

The two of you have been childhood friends since you were about ten years old.

You walk into each other's houses without permission, and your parents know each other well. There isn't a single secret or embarrassing moment you don't know about each other, and you pick fights and play pranks every time you meet.

You tease each other relentlessly and bicker over the smallest things, yet you're always back together in no time.

It's not always a heartwarming display of friendship.

In fact, you both often act like the other is a total nuisance.

However, when one is missing, both of you get bored and end up being the first to reach out.