User blog comment:Water Dragon Slayer/Chapter 348 - The Demon's Back/@comment-33019320-20130823091518/@comment-7418318-20130823093407

"Fairy Tail has room for only one Celestial Spirit Mage."

Why? They have three Dragon Slayers after all, so why can there be only one Celeastial Spirit Mage?

I think when when mr. ugly talked about the entrance of the underworld it was just his philosophical way of telling Gray that he's about to die.