"Art? Heh, what fine confidence. Just make sure you don't disappoint me."
The wealthy old man said this as he opened the silver briefcase, revealing a jelly-like substance inside. It was pale blue, completely transparent, and looked very sticky and soft, with some strange impurities visible within.
"This is the spine of a Karma Demon. I need you to excise these redundant parts, and the waste must not exceed one-third."
Chapter 177