Kareha, I've told you this many times already...

Rin-chan and I don't have that kind of relationship.

By "that kind of relationship" you mean...

Maamaa♪ (Kareha's catchphrase whenever she starts imagining things, usually of a risque nature)

Asa-chaan! We're friends, aren't we~!?

Au~

Au~

Ahh~ geez~

At least try to stay within the boundaries of common sense when you're imagining weird things!!