"I'm in you~"
Cas: W-WHAT!?
His eyes widen, panicked
"Pft- HAHAHA!"
Cas: GET OUT GET OUT GET OUT!
He clutches his head
"No.."
Cas: W-w-what do you want!?
"Shard..."
He slowly took control of Cas's arms, moving his arm up to Cas's neck
Cas: NO! IT'S MINE!
He jerks his arm away, eyes going red again
Cas: Get the fuck out of my body...
Cas: Ngggg-
It's clear that fighting Redd is taking a lot out of him
"...no. I need more shards."
Hed caused Cas to slam into the wall
Cas: AUGH!
He rubs his head, momentarily distracted