#I WAS POSSESSED BY KYOKA SUIGETSU WHEN I WROTE THIS I APOLOGIZE

[akashis-waifu]

An Eternity of Mind Games with You (Aizen Sousuke x Reader)

Canon-divergence one-shot, set years after TBYW. Female reader is the Soul King, so is Aizen if you squint hard enough. Your first name is "Hana" for plot-purposes.

Tags: Domestic!Aizen with usual sass, wholesome, fluff, cringe but we embrace it. Immortal x immortal, enemies struggling with new established co-dependency. This might seem slightly out of character, but we've got Kyoka Suigetsu to blame. Contains spoilers on the ending of TBYW and CFYOW!

"Oh please, dear wife."

You raise an eyebrow at your self-proclaimed husband. The two of you have only been together for a decade as Lord and retainer — co-rulers, if you squint hard enough — after Aizen Sousuke tricked you into absorbing the Hougyoku, which apparently had long merged with his spirit. In effect, the man became a part of the Soul King and is now able to use your authority, as long as you agree to it.

In return, you get to wield one of the greatest Zanpakuto, Kyoka Suigetsu. You see it as an absolute win, the Central 46 doesn't.

As to why Aizen insists that you two are husband and wife, he argues that "A system where a man and a woman govern together is called monarchy. And it goes without saying that a King and a Queen are married." He seems to have put the cart before the horse, a very uncharacteristic blunder for the renowned war criminal. You simply guess that the fusion might have caused him brain damage.

"I swear, I haven't used Kyoka Suigetsu for a long time. There is literally no reason for you to act delusional."

He feigns to be hurt at your words. "You are the king, I am the queen. How can we not be married?"

"It's crazy how you easily admit to being the queen now." During your ascension, you had to repeatedly remind him that the Soul King was you. If he insisted on his god-complex-driven monarchy delusion, the Queen would be him.

Aizen shrugs. "As the human saying goes, let me cook."

Chills run down your spine. Something is wrong. "Maybe I'm the delusional one."

"Took you a long time to realize."

A shattering sound awakens you. After adjusting to reality, you glare at Aizen Sousuke who has successfully swiped the two Heavenly Tickets out of your hand.

"Please stop using Kyoka Suigetsu on me."

He chuckles mockingly. "You have a funny mind, I can't help it."

You try to take the tickets from him. Those are your mode of transportation to Seireitei! "It's Rukia's inauguration today. We really need to go!"

"You can go by yourself."

"I can't leave you here alone!"

Aizen smiles. He knows that it is a matter of distrust — that he might destroy the Soul Palace in your absence — but teases you nonetheless. "What a caring wife you are."

"Is the illusion not over yet?"

"My apologies. I'm simply not in the mood to head to Seireitei today," he explains briefly, before turning around. "Feel free to go without me."

You watch with curious eyes as Aizen leaves the room. He has undoubtedly mellowed out compared to 10 years ago. Memories flash through your mind.

At the end of the war, you were supposed to absorb Yhwach, become the Soul King, and be sacrificed as the new linchpin of the Three Realms. If Aizen hadn't given you the Hougyoku that granted your divinity as the Soul King, you wouldn't have gained the authority to banish Hyosube Ichibe.

If it weren't for Aizen, you would've been mutilated into a thoughtless doll. You may not express it, but you are eternally grateful to him.

Standing at the edge of the Soul Palace, you stare at the boundless sky below. It is almost time for your departure.

"He tells me to go by myself, but he knows I hate jumping all the way down to Soul Society. He could have at least returned my ticket to me." You sigh and jump anyway.

Upon arriving at Seireitei, you use Kyoka Suigetsu to disguise yourself as a white butterfly. You dispel the Shikai after reaching the 13th Division.

"Hana-san! Ah, I mean, Soul King!" Kuchiki Rukia hastily corrects herself. She then invites you to a celebratory dinner and you spend some time with the Thirteen Court Guard Squads.

The party ends late. Rukia offers the Kuchiki residence for you to spend the night in, but you decline, worried that someone might wreak havoc in your palace if left alone for too long.

She suggests to escort you to Shiba Kuukaku's hideout, aware that you would need the cannon to return to the Soul Palace. Still, you refuse, "No no! No need. It's already late, Rukia, go to sleep. I usually disguise myself as a harmless butterfly when I go around Seireitei to avoid unnecessary attention. Don't worry!"

On the way to the hideout, you feel that you're being followed. You instantly regret declining her offer.

When Aizen finds you in the middle of Seireitei, you are already bleeding from a large cut on your torso. He rushes to your side and activates the Hougyoku to accelerate your healing. As if to laud his effort, you soon regain consciousness.

"Aizen...?" you ask, vision still blurry. "What are you doing here? I... I thought you didn't want to go."

"You're not adept at using Kyoka Suigetsu yet. An incident like this is bound to happen."

"I see," you chuckle weakly. "No wonder she saw through my disguise."

His grip on your shoulder tightens. "Who was it?"

"Candace."

"Candace?"

You cough out blood multiple times and reach out to caress his cheek, as if ready to utter your last words — which would be if he doesn't take the joke lightly.

"Can deez nuts."

Aizen deadpans. A shattering sound takes him out of his reverie, and he looks over his shoulder to see you fiddling with the tickets that he had previously hidden in his sleeves.

Of course, the whole farce was an illusion. He should've known since the Hougyoku grants instant regeneration. He sighs in annoyance. "I'd like to take the Hougyoku back. You're too insufferable."

"Is that a request for divorce?"

He smirks. "So, you acknowledge our marriage."

"Hell no!" You click your tongue, frustrated that he always has the perfect comebacks. "Can't you act normal for once? What happened to Aizen Sousuke, the war criminal?"

"You prefer that version of me?" He pushes his hair back. You aren't used to that sight since he always has his hair down when you're alone together.

You visibly cringe. "Stop doing that. What would you do if people recognized you?"

"We're using Kyoka Suigetsu. From their perspective, we are nothing but butterflies attracted to beautiful flowers basking in the moonlight."

You frown at him. "We're literally walking on concrete. Not a single flower can be found here."

"There is."

Aizen raises your chin, staring directly into your eyes. "Hana."

Too stunned to speak, you allow yourself a moment to think.

You finally understand why Aizen was so popular when he was still with the Thirteen Court Guard Squads. His strength, intellect, charisma — the sultry voice and handsome features that you will never admit to his face — he used everything at his disposal to manipulate everyone.

It will never work on you, though. Not today, nor in a million years.

You are good, he is evil. You are yang, he is yin.

You are pure, he is corrupted.

The Soul King can never let Aizen Sousuke dye Her in his color, for that would mean the end of the Three Realms.

You give him a thin smile. "Would you like the Hougyoku back? I can hand it to you now."

"Oh, you jest." Aizen feels the sudden shift in mood and lets you go. That's enough teasing, he muses to himself.

With an eternity to look forward to, he doesn't mind biding his time. You are the Soul King, the strongest, most benevolent, and most dangerous being in the Three Realms. It goes without saying that you are the greatest challenge he will ever face. It could take hundreds or thousands of years — even millions — but he knows that you will submit to him one day.

It's not a matter of if, but when.

You extend a hand at him. "Let's go home, Sousuke."

But, he has to make sure you don't win him over first.