Beginning of Training

"You can strike me now," commanded Arthur the confused Merlin. Since they last met, the druid has grown, all thanks to living next to the divine tree. The leaves on its head were now lush green, and two strong branches worked as horns.

"I don't understand, Seika," muttered Merlin. "Are you trying to test my loyalty? Why is your skin so shiny? Why are you flying?"

"I am not testing anything, and all you need to do is to strike me. You don't have to try to kill me. Just a simple strike will be enough."

"I refuse to injure my benefactor."

"I will remove the divine tree if you refuse to..."

Boom!

Arthur flew across the sky like a broken kite, crashing into a giant tree and breaking it in half. The air got kicked out of his lungs, and the metallic luster of his skin disappeared.