To say it in the simplest terms, you and your Berserker have never gotten along. Not for any particular reason, just that he's a shut off person, it seems especially so towards you.
you can't blame him, over the weeks since you summoned him, you'd been having these wildly horrific dreams of torture. His torture. The bullshit Medb had put him through so she could have her mad king. You understand him a little better, but that doesn't mean he particularly cares how you think of him.
You'd allied yourself with Assassin and their master in an effort to take down Caster and their master. As a result, you and Berserker are now stuck in a small box, a trap of Caster's designed to hold it's victims until they confess a secret. Of course neither of you had said a word, your positions more than compromising enough that Berserker can't attempt an attack.
You're seated in between Berserker's legs with your knees against you chest and your back pressed to his chest. You're honestly surprised that he doesn't seem too bothered by the closeness of the situation.
You jump when you hear him speak, a sound you doubt you'll ever get used to, you think. "We.. must find our way out of here," is all your Berserker says.