This feels terrible. Even worse when Dimitri jerks enough to dislocate his arm. The guilt is like a slap in the face, and Byleth audibly winces for him.

"Breathe. We'll figure it out. I know what it's like, Dimitri. Before I came here, there was a version of you that wanted nothing to do with me. It felt wrong. I'm sorry. I'm so sorry."

He does feel the fight drain from the man's body though, and when he's finally still, Byleth's grip loosens.

"I'm letting go now." And he does, moving away and very gingerly minding his arm. "I don't know what was different about the Byleth you knew. I'm not a demon. I'm just a man. But this Byleth, the one sitting here with you cares. And he will continue to care." He can reiterate when Dimitri's head clears.

Taking his canteen from his belt, he wets his handkerchief and presses it to Dimitri's cheek. Nice and cool.

"I need to fix your arm. But first, just breathe. Slow. You can have some water when you want."