Cas is just very amused by all of this
Cas: Pffftt-
Cas: pffft-sorry, but watching my boyfriend get his ass beat by his sister is really fuckin' amusing-
He claps a hand over his mouth, realizing. His eyes widen a little
Cas: ...
Cas: U-um...
He's looking at Ren with the 'oh god, what do I do!?' look
