"Dimitri-" You left me. That hurts. Whatever version of Byleth he knew was a far cry from anything this Byleth could fathom. Wincing at the grip on his wrist. It's strange to be on the receiving end of that strength when the intent is aggression.

In a way, he relates. This man is jilted for some reason. Angry that he didn't get what Byleth had to give. Byleth tries to wrench his wrist away from the painful grip to no avail. He can see the near panic, the desperation, and as much as it pains him to think it- this man could hurt him. He hates the idea that Dimitri would, but the Dimitri on the island did. Emotionally anyways. Honestly he almost prefers this anger to the coldness of simply not mattering. Regardless, he needs to interrupt this.

So he slips under Dimitri in one smooth motion, taking his hand with, bending it behind his back and hooking his leg around the other man's pushing at his center of balance and sending him down on his belly. The hand still wrenched behind his back in an uncomfortable stress position.

"Dimitri." His own voice calm and stern. Commanding. "You will listen. I don't know what happened in your world. I will need you to speak to me calmly. Rationally. I don't know why the Byleth in your world left, but we can sort that out."

Deep breath.

"I'm going to let go of you now, and let you up, but I need you to be calm and talk to me. Can you do that?"