Back in the dudgeon Erza and Kat have been taken care of the gorilla-like demons. More large gorilla-like demons appears as they roared at them.

Erza: Tch! More demons!

Kat: They just keep coming!

Nevan: That's right. Unlike you humans, dragons, and other weak monsters, we demons are like an endless swarm that you'll never swat so easily. 

Erza: Reqiup!

Erza Requip into her Heavens Wheel armor.

Erza: Heaven's Wheel: Scattered Petal!

Her swords were sent straight towards all the demons, stabbing them through their bodies and killing them. 

Kat then pulls out a pair black and sliver pistols called Twilight and Eclipse. 

She fires the pistols and gain headshots on some demons. Nevan then starts clapping her hands.

Nevan: Impressive. Normal humans and weak wizards couldn't kill this many demons. 

Kat: Is this some sort of game to you? 

Nevan: What? Can you blame a girl for having fun? 

Erza: You sound like you're enjoying this. 

Nevan: (giggles) You flatter me, wizard. 

Nevan puts her hand on her chin and looks closer at the girls. 

Kat: What are you staring at? 

Nevan: Your body types. (looks at Kat's) You're a little small but still good. (shifts to Erza's) Yours is great, but you covered too much. 

Erza and Kat: (confused) Huh? 

Nevan: (looks at Erza) You. (Erza cocks a brow) You seem like a perfect couple for Drake, don't you agree? 

Erza: (blush) W-What?! No, that's not true! We're not a couple! 

Nevan: (smirk) Sure you're not. You always wear armor, yet you also have red hair as me. But compare to you, (dose a sexy pose) I always show my body to be better for a man like Drake. 

Erza then starts getting angry to the point when even Kat got scared.

Kat's mind: Oh crap, she looks pissed! 

Nevan: My, my, that's some look you got there. It's giving me the shivers. 

Erza: You devil! To think that Vali who bring someone like you back as his slave, only for you to try and manipulate my feelings!

Nevan: I maybe bound to be a slave to the son of Sparda, but I also admit that I would like to work with Drake more than Vali. He's more like his father.

Kat: Huh? It sounds to me like you know him personally. 

Nevan: Indeed. I do know Sparda personally, the truth is I was actually one of his old lovers when he was young.

Erza: (surprised) What?

Nevan: That's right. Sparda used to be quite the ladies' man himself. Even if he was more of a gentleman compared to Drake, like father like son. Sadly, he's dead now. But his son, Drake, is great too. And I would like to keep him for myself. 

Erza: (angry) Damn you! You will do no such thing to him! (charges toward Nevan)

Nevan: That's cute, but I will have Drake for myself. And you can't stop me! 

Nevan unleashes a powerful dark purple lightning at them, however Erze requips into her Lightning Empress Armor and absorb it.

Nevan: (cocks a brow) Oh? 

Erza: I know you're not completely Drake's enemy, but he's now a Fairy Tail member! The one I care, so I can't let you take him!

Nevan: (seductive laugh) Well then, come on, sugar.

https://youtu.be/tq3LnUHa7Lo

Nevan starts off with a stationary, whirling attack with her skirt blades. Erza spread her legs to give herself a wide base and then shoved her spear into the ground in front of her. 

A red magic circle appeared but was then replaced by a dome-shaped shield of blue energy. However Nevan starts attacking the shield, it began to crack before it broke as Nevan smack Erza that send her flying to a wall. 

Nevan: How's this? 

She fires several separate groups of lightning-charged bats at Erza, but she jumped to avoid them. She held her spear out in front of her, pointing it straight at Nevan. All of a sudden, bluish-white energy began to accumulate around the tip of the spear. 

A moment later, a Lightning Beam discharged from the spear's tip. Nevan disappears before she reappears behind Erza and gave her backflip kick. 

Nevan: Now you will become tired!

Nevan unleashes pillars of purple lightning from the ground which Erza and Kat dodged. Erza jumped in the air and hovered in place. She aimed her spear and fired more volleys of Lightning Beams at her adversary. 

However, Nevan disappears again before she reappears. She then cackle as the ground crackles a bit with electricity, then is flooded with an electric charge that starts shocking Erza, screaming in pain.  

Nevan: Are you enjoying yourself?

She typically follows the ground-charge attack with a series of lightning bolt, fence-like attacks from where she stands. Erza then got shocked again as she fell onto her knees. 

Kat: Erza! 

Erza's mind: Her lightning is too much for my armor to absorb. Her lightning is as strong, if not, stronger than Laxus's. Is this the power of a high-level demon?  

Nevan: Is that all? I was expecting more from you weak humans. 

Erza: Tch... Don't you dare underestimate us. (requip to Clear Heart armor) We faced many powerful opponents like you, in the end we remain victorious!

Kat's mind: She requip into her Clear Heart armor? Why would she do that? 

Nevan: (seductive laugh) That's some big talk coming from a woman who's about to die! 

Nevan unleashes a purple lightning ball at Erza, but she cut the lightning ball in half which surprised her. Then she enchantment Nevan's lightning to her Demon Blade Benizakura. 

Nevan: What?! She enchanted my lightning into her blade?!

Erza: (smirk) I learned this spell from Wendy six months ago.

Nevan: Impossible! No human can enchant demonic power into magic weapons!

Nevan unleashes greater lightning projectiles, but Erza deflects them with enhanced sword. Feeling enraged, Nevan unleashes a larger swarm of bats. However Erza manages to cut every single one of them. 

Nevan: No way! She's cutting through my attacks! 

Erza: I told you before, you should never underestimate humans! 

Erza charged at Nevan as she defeated her with a powerful slice. Blood was spilling from her body before she fell down on the ground as the she devil was on the verge of death.

Nevan: Aaangh..! Damn it... I was so close.

Erza: Nevan...

Nevan: Sparda was a handsome devil... but Drake was no slouch himself. (weakly smile) Please, take care of him. I hope to see you and he start mating soon. 

Erza: (blush) Huh?!

Nevan died as her body vanished into nothingness. After that Erza turn around and saw Kat give her a small laugh. 

Erza: (blush) Stop laughing! Don't you dare tell anyone about this!

Kat: (smile) Sorry, it's just so funny seeing you embarrassed like that. 

Erza then couldn't help but smile as well.

Erza: I guess you're right. Come on, we have to find the others. 

Kat: (nodded) Right. 

Chapter 20 ended.