Weapon seller in the world of magic Chapter 561: Mark acquires a demon slave

'It looks like I struck gold.'

Mark controlled his happiness by clenching his fist and trying to be as calm as possible as he replied, "Bael once told about the existence of a beast nad Leviathan. I wish to form a contract with it. But, I don't know its location and I don't have enough ti to explore this entire realm in search of the beast. If you kindly help , it would help a lot."

"Guardian Leviathan?" The demon's eyes widened in shock before a chuckle escaped from him, turning into a burst of laughter, "seriously? Hahaha… oh, great devil… I never thought I would hear such words from a mortal in my whole life. You looked like soone who is still in the Body forging stage (