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Chapter 138 - S Rank Exam! A promise made four hundred years ago

The following days after returning to Earthland were busy for everyone. Settling the Exceed into a village near Magnolia, explaining what happened to the Magnolia residents, making Selene, Erza and Irene come apart in bed and preparing for the end of their time in Fairy Tail had kept Yin and Yang busy.

Thankfully, things had slowed down by the fifth day back. Though the twins had new followers ever since they finished helping settle Extalia.

One black and grey Exceed with a full body black leather outfit and a hood, fittingly named 'Shade' always followed Yin around. While a white and orange Exceed in baggy shorts and an open top, also fittingly named 'Scorch' followed Yang around.

As for why? Apparently, these were the weirdos of Extalia. Shade had seen Yin's performance with Prince Jellal and swore to become her disciple in 'aura farming'. And Scorch was an Exceed with rare fire magic and a laid back disposition. Though all his fire magic could do was create a tiny beam that would give a normal person a first degree burn if his beam lingered on the same spot for more than five seconds.

So an aura farming wannabe edgelord and an entirely too relaxed Exceed with fire magic that was essentially a kid with a magnifying glass and sunlight.

Yin was currently watching the Guild from the second floor. Yet another fight had broken out and she was watching her 'kids', (sans Wendy) fighting and breaking tables. Even Erza and Mirajane were close to throwing hands.

"Heh.. I think I'll miss this the most." Yin muttered fondly, watching Natsu's head get shoved through a wall after bumping into Erza.

"Master? You sound as if you're leaving the Guild. Not that I have any strong feelings about that.. hmph.." Shade spoke up, standing atop a bookshelf beside Yin, arms folded as he looked down at the chaos, his magic working to make his clothes move gently, as if there was wind moving them.

"Tss.." Yin snickered at the display, "Yes. Soon, Yang and I will leave and return to our home world of Remnant."

"Ah I understand. Master is an alien to Earthland like us. Is it like that one world you visited while helping us rebuild Extalia?"

"Farther away, I'd say. Elentear and Edolas are probably pretty close by to Earthland. Given Ethernano exists in all three worlds, they're all likely connected." Yin explained.

"So Ethernano doesn't exist in your world, Master? Interesting.. I will have much to see when I come along." Shade stated, trying his best to sound dismissive.

Yin snorted and leaned her head against her hand, "If that's something you can do, sure."

"So.. it's true. You are leaving."

Ultear walked over, having hidden herself behind a bookshelf. Her appearance made Shade nearly jump in surprise, but he quickly regained composure and held his pose, trying to look as composed as Yin.

"Yeah. I guess Erza mentioned it to you?" Yin asked, still looking below, where Yang had started using Natsu as a bat to beat up Gajeel, Sting and Laxus.

"She said... that I should make up my mind before the exam. Honestly? She was right.. I'm just stalling at this point." Ultear sat across from her and gently touched the top of Yin's hand.

"Ultear. You're a good woman. You've grown into an exceptional Mage and an instrumental part of the Guild. You can find someone who loves only you. I'm a Dragon. I'll treasure you but if you're looking to receive the kind of love that Yang and I share? I can't give you that. Erza and Irene have accepted that. Can you?" Yin turned her focus on Ultear, her crimson eyes narrowed on Ultear's.

"Are you doubting my feelings? I know I was slower than Erza but.."

Yin shook her head.

"I'm saying you should consider the consequences. I may not return here for a while but I will return eventually and take what I consider 'mine'. That includes Erza and Irene. Fuck, maybe I'll take the Guild or Magnolia.. or Earthland itself when I do come back. What I'm saying is.. the decision to 'be' mine isn't one you should take lightly. I don't react well to people trying to take my treasure."

Hearing Yin's explanation, Ultear felt her throat go dry. There was a deep greed and desire reflected in her crimson eyes. The kind that drew her in and gave her complicated feelings. Ultear blushed, looking at the table.

"That's... kinda hot, actually. Oh I'm a freak, aren't I..?" Ultear groaned into her hands.

"You're not the first who thinks so, relax. Shia, that Girlfailure Dragon Tio, Neo, Emerald, Erza, Irene, Selene... actually I think Selene is just in 'love' with mine and Yang's bodies.. for now." Yin chuckled, prying Ultear's hands away from her face and looking her in the eyes again.

"What you must consider here, is that the moment you decide to be mine, you are signing up for a harem. Your opinions will be respected but often times I do like 'sharing' my sister too. If that sounds too innaprop-" "You mean like a threesome...?"

Ultear's face was as red as Yin's eyes at this point. Imagining the mènage à trois and being sandwiched by twins made her head spin. She started to question if she was secretly a massive pervert, because she started liking the idea.

Her mind sinking into the thoughts of sucking on Yin's impressive breasts, fingers closing around the artistic musculature of her back while Yang loomed over her from the back, thrusting a toy into her deepest reaches while she got to worship Yin's body with her hands and mouth. Her legs shifted under the table, trying to allieviate the liquid heat pooling in her core from the perverse thoughts swirling in her head.

And given the knowing smirk on Yin's face, she knew she had some inkling as to what Ultear was imagining.

"I've... had seven years to watch you and come to terms with my feelings, Yin." Ultear cleared her throat and fought down her blush.

"The fact is, I love you and that's not something I ever thought I'd feel after my childhood. I'm certain about this. You're my hero, my teacher and the only one I want to give my love to. Well.. you and.... er.."

Yin barked out a laugh, reaching over and stroking Ultear's head.

"Then you're mine now, Ultear. I won't let you go no matter what you say now." Yin's habd slid down to the back of her head and pulled Ultear in, crushing her lips with her own and skillfully rolling her tongue against hers.

The usually composed Ultear made a muffled cry in alarm, then she relaxed and closed her eye and held onto Yin's shoulders. Her inexperience showed but Yin guided her, letting her tongue and lips show her how to properly kiss.

"Attention! Hey! STOP FIGHTING, YOU IDIOTS!"

Yin pulled away, a saliva trail connecting their lips as Makarov shouted below them, stopping the fight after a well-placed giant fist that sent Gajeel and Natsu flying into the ceiling.

"It's time for the annual S rank exam! You know what that means! Time to name the candidates and proctors for this year."

"So it's starting.. we'll likely be going to Tenrou tomorrow. That'll likely be our last day." Yin muttered, watching below as Cana, Lucy, Natsu, Gray, Gajeel, Juvia, Levy and Elfman were nominated.

"Your proctors will be Erza, Laxus, Irene, Ultear, Yin and Yang. Get yourselves ready! We leave by jet tomorrow."

And once more, the Guild was in an uproar. Some like Lucy had even tried to butter up Yang and Erza by buying them booze and desserts. While Natsu and Gajeel were already bolting outside to get some training in before they had to leave.

"Dammit.. I really waited too long. Do you think I.. could stay in your room tonight, Yin?" Ultear stood up, face flushed yet her expression passionate and honest.

"Hoh~? You want something to tide you over in the time we'll spend apart eh? I can do that. Maybe Yang will be up to it too." Yin smirked, stood up and pat Ultear's cheek.

"My room at ten tonight. Don't be late."

Yin then left the red faced Ultear and went downstairs to join Yang. Leaving Ultear and a silent Shade behind.

".....Master is amazing in the art of seduction.."

Ultear couldn't help but silently agree..

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The night had passed by, blissfully for some, nervously for most. By the morning, they had bid farewell to the Guild and boarded Yin's jet, taking off to Tenrou while Wendy soothed the Dragonslayer's motion sickness with her Sky Dragon magic. Yin sat in the cockpit of the jet, next to Yang, who had her feet up on the console.

"Ultear was reaaaaal generous eh? I think we probably unlocked a breast sucking fetish for her.." Yang said in a teasing tone, grinning at her twin.

"So we're gonna pretend like you didn't get off on her doing that and calling me 'Mommy'? I felt you clench around my fingers too, Yang." Yin replied stoically, though still had the ghost of a smirk on her face.

"Oh I'll admit that.. It was hot." Yang agreed, though sighed and leaned back after a few seconds of silence.

"It's just too bad about Mira. I thought she'd have tried to confess sooner but she never gathered up her courage. Ya didn't scare her off, right?" Yang asked, looking at Yin semi-accusatorily.

Yin merely rolled her eyes.

"Of course not. I've been giving her little nudges to confess but she just kept deflecting and acting she was too 'cool and rebellious' to do it. Maybe we underestimated how subby she actually is.."

Yang hummed, considering her words, "Yeah, maybe.. Well, it's not like we'll never return. I didn't wanna put all that 'You're mine' pressure on her if she wasn't ready for even a normal confession."

"Tss.. you're a little Subby yourself, it sounds like." Yin snickered.

"Only for you, Babygirl~" Yang replied flirtatiously, pulling her tanktop out and flashing Yin with her tits.

"Not while I'm piloting, Sis.. I could kill everyone but Irene and us..." Yin chastised, though ended up doing a double take anyway.

"Hehehe! My bad~ My bad~"

Both talked as they flew closer to Tenrou, both hiding a strange fluttering energy within, waiting for a chance. Unaware that, within them both, Equinox was anxiously waiting for a chance to emerge again.

"One day... Just one single day. After you break the curse.. Acnologia is mine."

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