He exhaled and began to pour in all his concentration, his senses scanned every part of his body, searching for a precise coordinate to his acupoints, and once he found them, he brought out eight golden needles from a bag, after coating them in his mana he began to insert them on his back.
"Kid, I am going to start."
As soon as he heard his voice, Ainz tightened the grip on the chains, and called out the system as he activated wyvern regeneration, and then began to shut off his pain receptors, preparing himself for the wave of pain that was about to come.
CRACK!
[Wyvern regeneration activated!]
The sound of the first golden needle with mana pierced into Ainz's body destroying one acupoint with it.
An indescribable pain ran through Ainz as he felt as if his head was about to explode from the pain, the pain receptors he had just shut off felt like they were about to burst open, as he let out a little grimace from the piece of cloth in his mouth.