"First, don't get too worked up. Didn't I say before that I was planning to take a trip to the Empire? Now that you've recovered, come with us."
Lu Li said, calming Mavis down. "Perfect. There are also some things I want to ask Zeref."
After soothing Mavis, he looked at the magic crystal that had originally encased her.
According to the original story, Mavis had simultaneously nurtured the powers of life and death within her, eventually producing an unforeseeable change: Fairy Heart, which was said to possess eternal Mana.
Zeref had sent the Spriggan 12 to attack Fairy Tail in order to seize Fairy Heart. He hoped to gain that power and use it against the Black Dragon.
When Lu Li had first entered the basement, he had indeed sensed immense power within the fusion of Mavis and the crystal. But after Black Lily suppressed Mavis's curse, the fluctuations of that power vanished.
Once Lu Li extracted the Ankhseram Curse from Mavis, that power disappeared completely. Lu Li guessed that this magical phenomenon was only born when the powers of life and death merged in some special state, much like the matter-antimatter annihilation he had heard about before coming to this space.
Now that Mavis's curse had been lifted, the so-called Fairy Heart no longer existed.
Fairy Heart was supposedly a "treasure," but Lu Li did not regret it. He already possessed the Fairy Spirit Seed, and by this world's standards, he inherently had infinite Mana.
"Thank you all so much..."
When Mavis heard that Lu Li was willing to take her along to remove Zeref's curse together, her heart leaped with joy.
"No need for that. Aren't we companions?"
Lu Li had already grown accustomed to the atmosphere of the Fairy Tail Guild. He smiled and headed upstairs