Fairy Tail Super. Book 2: Black Mirror

Revere Him, Praise Him, Supreme God Zamasu

Acnologia, back in his human form, staggered over behind a building as Kale's voice could be heard in the distance, screaming, as she destroyed several buildings in an attempt to find her opponent.

"D-Damn.." Acnologia muttered. "I only barely escaped."

"Acnologia.."

Zamasu hovered down to join his fellow destroyer.

"Zamasu, this plan's going to shit.. Your clone of the saiyan is far stronger than what a 'failed experiment' would entail, and possesses your fighting experience.." said Acnologia. "And to top it off, we've got something I've NEVER seen before.."

"Of course.. the Saiyan Berserker.." Zamasu said. "She most definitely is unique..  The powers at work here are far too great for a lesser god and a mere Dragon Slayer..  if we are to destroy Fairy Tail and deal true justice, we must become stronger.. it is time.."

Zamasu held out a green beaded earring, much similar to his own. 

"No.. I'm not fusing to you Zamasu." growled Acnologia. 

"Hmm? Why not?"

"You're a kai ." said Acnologia. "That means the fusion would be permanent. I will not deign to share a body with another fool..  and besides, I thought you hated mortals.."

"To shoulder the form of a mortal upon my fused body is a symbol of the mistakes I must shoulder to rectify what the gods have done.." said Zamasu. "I see no wrong in this. In fact, I originally planned to fuse with Black.. but.. she has become such a disappointment. "

"Well.. find somebody else to fuse with." said Acnologia, as he coughed up blood and put a hand over the massive injury in his abdomen.

Acnologia let out a low grow, there was steam, and then Acnologia's gut injury from Kale regenerated... Acnologia fell to one knee in exhaustion.

"Then I must find some other way of making use of a fusion..  hmmm.. I know.." Zamasu smirked. "I do have THAT on standby.."

"You can't be serious.." Muttered Acnologia. 

"Just you wait.. this will be a true spectacle.. one of  great use indeed." said Zamasu with a chuckle. "the Zero Mortal Plan continues on schedule.."

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"Where did they go!?" Erza asked, as she watched Kale roar out some more screams, and fly by, wrecking a few more buildings. "I mean I know they're practically completely exhausted, now.. but we can't be too careful, we need to find them.."

"Hmmm." said Markarov, stepping forward. "To be honest, I'm more concerned with Kale, Isn't she going to be a little too.. active?"

"Yeaaaaahhh.." said Mana. "Not sure if she might accidentally destroy one of my Resistance members..

"She should be tiring herself out about... NOW.." said Caulifla.

As if on cue, Kale let out an immense amount of steam.. and shrank down to her normal form, fainting out of incredible exhaustion.

Caulifla flew up and caught her protogee just in time, smiling as she did. "Trust me.. turning into this form really eats up her stamina, doesn't usually matter though, since the enemy is usually done in an instant.. and in all honesty.. Kale remembers NOTHING afterwords.."

"Wh-What? Really?" said Wendy. "Something that huge?!"

"The old legends call it Legendary Super Saiyan.. something that only turns up once in a thousand years for Super Saiyans.. but I think the proper term is more like Super Saiyan Berserker.." said Caulifla. "The important thing is not to stress Kale out.. if you do.. well.. you're dead.."