It would be a lie to say that Yun Duritz didn't experience pain from the arm hold his 'older sister' had put on him but what could he do when the difference in strength between them was so huge?
He could either endure until the end or say uncle but considering that their clan seemed to be based on a barbaric power-based hierarchy so if he acted though he would be accepted more easily, and from what he understood Duritz himself was rather though so retaining his personality would be for the best if he wanted to continue fooling them.
"You can continue how much you want big sis but I will never yield!"
That's what he wanted to say but considering his bones were cracking and that his mouth was blocked by the floor all that came out of his mouth was:
"Ugh, con ho bi si ne yiel!"
"Oh, you don't want to yield! Hahaha you are still my Lil bro even without memories aren't you?"