At the guild of Devil Hand, the members have celebrated their attack on Crocus by drinking or fighting in contests. At the Master's office, Y/N was seen sitting on his couch with Asmodeua and Lucifer next to him. 

The rest of Ten Deadly Sins along with the Four Horsemen, Ijuna, Maria, Bol, Sledge, and Erron Black were also here as well. 

Y/N: Well done. Despite a few setbacks, we have managed to claim victory over our attack on Crocus. 

Iblis: Thank you, Master. 

Samael: I still have yet to find that man. 

Ronin: You mean Sabertooth's former master? Don't worry, I heard he was dead.

Samael: What?  

Rin: He's right. Apparently, he was struck down by Sting believing he killed his Exceed friend. Now he's currently the Master of Sabertooth.

Samael: I see... 

Mammon: (smirk) Looks like he still your kill, pal. 

Belphegor: Those wizards from the other guilds were so lame, I barely got any entertainment. 

Satan: Not me. That fight with Jura was a blast! Makes me want to fight the other Wizard Saints.

Leviatha: Still bloodthirsty as ever, Satan. 

Beelzebub: The beast is still yet satisfy. It craves more blood. 

Erron Black: You need to keep that thing on a leash, kid. 

Rayna: Don't worry, Erron. He's trying his best to suppress it.

Beelzebub: Thank you, Rayna. 

 Asmodeua: (smirk) I did saw some beautiful girls though. Their body types are perfect, not as perfect as Master Ziggy. 

Lucifer: You guys should've seen how I beat Minerva up like a blood pup she is. It was so good. 

Aldramalech: (laughs) How amusing!

Maria: What is it that you find so funny?

Aldramalech: Who'd ever imagine that there would be people daring to stand against Devil Hand, mainly the Fairy Tail wizards. (starts walking) I'm off.

Maria: You're not considering heading out to their guild hall, are you?

Aldramalech: Why not? It would be a perfect warm up exercise for my powers. Or do you actually think they'll defeat me?

Bol: Now wait a minute. Have you forgotten that it was this kind of arrogance that led to Oracion Seis and Grimoire Heart's downfall seven years ago? 

Aldramalech: Oh don't be a spoil sport, old man. 

Iblis: Master Ziggy? 

Y/N: Very well, I will allow it. But do not underestimate them, Aldramalech. 

Aldramalech: Yeah, yeah, I won't. But it would be a lot of fun. 

With the wave of his hand, Y/N used his Wormhole ability to transport Aldramalech before he stood up.

Rio: Where are you going?

Y/N: To my chambers. The rest of you enjoy the victory while it lasts.

He exits the room as he was walking through the hallway. 

???: It appears you have reunited with your old friends.

He stops as soon as he heard a familiar voice. He turned his to see a tall elderly alien being with features of aquatic animals, having a mass of tentacles for hair and a matching "beard" and fins in place of his ears. Additionally, he has sharp eyes and spotted skin. He wears a high collared coat with a chain holding the cuffs together, ocean-themed flowing robes, and a long cape.

Y/N: Poseiden Nero, my old friend. I see you have returned from your journey. 

Nero: Indeed I have, young Master. The Four Dark Stars that accompanied me have also made it home. 

Y/N: Good. Then that means all the members are here.

Nero: There is something I wish to discuss with you.

Y/N: What is it? 

Nero: There have been reports that Tartaros is planning their next move which bring Zeref's attention.

Y/N: I see. And what of Acnologia?

Nero: Unknown, but we have assumed he's after the current Dragon Slayers. Including the ones at your former guild. 

Y/N: Natsu, Wendy, Gajeel, and Laxus. Understood, I'll be in my chambers if you need me. 

Nero: (bows) As you wish, young Master.

Y/N continues walking until he was in front of the door which was only meant for him. He placed his hand on the scanner which scans and recognizes. 

Computer: Recognize. Code name: Demon King. Welcome, Master.

The door opens as he enters a laboratory before he was in front of four women which were inside four containers. 

Y/N: Mother... Big sisters... It won't be long until you four have been reborn as the Four Shining Stars. 

(If you read the Edens Zero manga at the Edens One War arc, mainly the backstory of the Four Shinning Stars and the Four Dark Stars, you'll understand why)

*Fairy Tail Guild Hall*

Meanwhile, at the Fairy Tail guild hall, Fairy Tail has been discussing about the situation with Devil Hand. Mainly regarding to Y/N. But they also mention about Leviatha, Wendy's friend from her old guild, and Beelzebub, a young boy who had joined Devil Hand. 

Makarov: (surprised) You are certain of this?!

Mirajane: We are. 

Makarov: (closed his eyes) To think that not only Y/N, but Wendy's old friend and someone so young would set down such a path. I can't even begin to imagine how this happened.

Laxus: A kid being in a Dark Guild is definitely messed up. 

Wendy: Master. Can this really be happening? Could it have been possible that not all of Cait Shelter was an illusion?

Makarov: It would appear so. Though I cannot answer how it would be possible, up until the incident with the Oracion Seis, I've never even met another member from that guild.

Natsu: What I'm a bit worried about is what she can do. 

Mirajane: She copied Gray's Ice-make magic, Carla's wings, Natsu's and Wendy's own Dragon Slayer magic, and even my Take Over magic. 

Gray: Is that even possible?

Erza: There have been those who have used Dragon Slayer magic before, yet they aren't considered true Dragon Slayers. Could it have been possible this girl had a lacrima implanted inside her as well?

Carla: Even if that were the case, it would not apply to how she was able to use Aera magic. That magic can only be used by Exceeds and no other species, it should be physically impossible.

Wendy: But we saw her Carla! We saw Sheeree use wings like you do!

Makarov: Perhaps not the same sort of wings. 

Lisanna: Master, what do you mean?

Makarov: I believe that this girl possess the ability of Magical Drain.

Gajeel: Magical Drain? The hell is that?

Makarov: A very rare form of magic. Supposedly, it allows a wizard to copy the magical abilities of those who are near him or her. It's the only reasonable explanation as to how she was able to mimic yours, and Gray's abilities. 

Cana: (rolled his eyes) No one likes a copy cat.

Wendy: But why would she join Devil Hand?! It makes no sense at all!

Makarov: (sighs) Wendy, I understand if this is too personal, but what was your relationship with this girl?

Wendy: Well... We were friends...

Carla: Hardly.

She felt bad about that, but Wendy had a tendency to sugar coat things so Carla decided to be straight with it.

Carla: Sheeree was not the friendliest person we knew. Wendy did try for many years to approach her, but she would either ignore her or just straight up tell her to 'get lost'. Though she seemed anti-social, I can say for certain that she at least never hated Wendy... not in the same sense we saw her recently.

Wendy looked down a bit while the rest of the group contemplated in silence, at least before Makarov spoke up again.

Makarov: This certainly is disturbing. 

Juvia: I'm much more worried about my beloved prince. 

Levy: You're not the only one. I wonder what happened to him that me act like this.  

Elfman: He told us about what he was doing for the past seven years, but I doubt he told the whole truth. 

Lucy: (disbelief) I could never imagine he would become our enemy. 

Makarov: Hmm...

Erza: Master?

Makarov: During my battle with Y/N, I sensed an evil aura radiating with his body. I am not sure, but I believe it was like he developed a different personality.  

Gray: A different personality? 

Lucy: Like a second identity? 

Makarov: Perhaps... 

Erza looked down in as she was remembering her times she spent with Y/N seven years ago. To see what he has become now, it gave her a sad look.

Erza: (thoughts) Y/N... What happened to you? 

Lucy: Erza, are you okay?

Erza: Yes, I'm fine Lucy...

But Erza wasn't the only one. Everyone in Fairy Tail remembered their time with Y/N, especially Lucy, Wendy, Juvia, Cana, Mirajane, Lisanna, and Levy. 

Natsu: No matter what happens, I'm gonna bring Y/N back to Fairy Tail. If he thinks he can act high and mighty just because of his new power and guild, I'm gonna show him he's dead wrong! 

Happy: Natsu... 

Suddenly, everyone heard explosions coming from outside the guild hall. 

Gray: What the hell was that? 

The members went outside to see the town in flames as the townsfolk around running and screaming. 

Carla: What's going on?!

Lily: The town is under attacked?

Just then, they saw a fireball heading straight towards them.

Gray: Ice Make: Shield!

Gray created a shield that took the shape of rose pedals which blocked the fireball. They then saw the attacking on a building which was none other than Aldramalech.

 Aldramalech: Nice block! You've got kine observation, ice wizard. 

Gray: You! 

Juvia: It's the fire wizard from Devil Hand!

 Aldramalech: The names Aldramalech, one of the Ten Deadly Sins of the strongest Dark Guild in the continent. And I'm gonna enjoy burning you lot into piles of ashes! Hahahaha!

Natsu: You're from Y/N's guild? 

 Aldramalech: Yeah, that's what I said. Who's asking? 

Natsu: Natsu Dragneel, I'm his friend.

And you better tell me where he is or I'll beat it out of you!

Chapter 10 ended. 

Sorry it was short and all. I tried my best to the start the first chapter of the Devil Hand Arc, though I'm struggling of ideas. 

Fortunately, I did made some of them. One involving  Aldramalech challenging the Fairy Tail guild by himself, (mainly Natsu or Gray) and the other adding Poseidon Nero from Edens Zero to Devil Hand as Y/N's advisor and the second strongest wizard. 

His powers will be the same in Edens Zero: his water manipulation, Empire Dice, and Wormhole. But I'm adding an other power which will be revealed in the future chapters of the Devil Hand arc.

If you guys are wondering about the lemon scene, I will be adding Asmodeua, Lucifer, Iblis and maybe Leviatha. For Maria, Ijuna, Witch, Sister Ivry, Hermit, and Valkyrie, they will get a chance at some point. 

Anyway, let me know what you guys think. And if you some ideas of Aldramalech's fight, let me know at the comments below. Peace out and enjoy!