"You don't try to hold the water. You guide the flow."

He summoned a flame in his hand, holding it between them.

"Naturally, my full demon form would want to take this flame and burn you, the mountain we're standing on, and everything else until not a scrap of fuel was left. But I keep it from doing so by guiding what my full demon form can burn and what is off-limits. The urge to burn is satiated but I remain in control."