C636 The Seventh Transformation

Puff!

Black Dragon King spat out a fist-sized black bead from his mouth. This bead was emitting a powerful dragon force, and it had unlimited energy.

"Kid, this is the item that I want you to give me. I hope you won't go back on your word. Now, I don't have much time left. You can enter my mouth and directly go to my heart. There