"It seems everything I have done is not useless." The Explosion King smirked. "Explosion is an art. It's not always destruction. You, a slime, won't understand the real beauty of explosions."
I thought he was still a few levels from Mythical Rank?
"So… I guess I'll ask the favor from the Sword Saint to stop him. I don't know about the negotiation, but I'll need him in this plot. It's sad that even though I'm a Mythical Rank Expert right now, it's impossible for me to handle an Authority Level Figure.