𝐑𝐞𝐚𝐥𝐢𝐬𝐭𝐢𝐜 𝐒𝐨𝐬𝐮𝐤𝐞 + 𝐘/𝐍 𝐇𝐂𝐬
Hello again, everyone. I've come to you on this fine day with some headcanons for Sōsuke Aizen. I hope the things I provide to you on this god-like specimen don't disappoint; however, you'll be disappointed.
I... don't know why his was so hard to write for considering I simped for this man for a majority of the 2010s... so this is a little shorter than I'd wanted and I apologize.
𝐖𝐚𝐫𝐧𝐢𝐧𝐠𝐬: manipulation, "subtle" emotional abuse; a mention of Stockholm Syndrome; a mention of n/sfw (kind of) for the sake of explanation.
𝐇𝐂 𝐫𝐞𝐪𝐮𝐞𝐬𝐭𝐬 𝐚𝐫𝐞 𝐨𝐩𝐞𝐧 𝐟𝐨𝐫 𝐌𝐇𝐀, 𝐉𝐉𝐊, 𝐁𝐥𝐞𝐚𝐜𝐡, 𝐍𝐚𝐫𝐮𝐭𝐨, 𝐎𝐧𝐞 𝐏𝐢𝐞𝐜𝐞 + 𝐂𝐒𝐌 𝐜𝐡𝐚𝐫𝐚𝐜𝐭𝐞𝐫𝐬 (𝐚𝐥𝐭𝐡𝐨𝐮𝐠𝐡 𝐈 𝐜𝐚𝐧'𝐭 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞 𝐰𝐡𝐞𝐧 𝐈 𝐜𝐨𝐮𝐥𝐝 𝐝𝐨 𝐭𝐡𝐞𝐦…)
I can make an easy comparison and simply say that Sōsuke Aizen is like The Joker, but he's so much more than a man that wears clown makeup all the time. I won't even put this lightly because we all know how manipulative this man is -- manipulative, and hot.
And he's well-aware that you think that he is. Absolutely nothing gets by him and it never has. He probably knew you'd be attracted to him before you even knew. He's not very tied to his emotions, and in fact, he'll utilize them like a weapon because it's easier for him that way. But while this is the case, he wouldn't involve himself with someone unless you both shared similar ideologies.
Dare I say, he could even be demi-romantic and demi-sexual. I wouldn't doubt it.
He is not a man who would tolerate a weak partner, not that he'd be likely to ever consider you equals, but you'll need to at least be on a certain level that he can't consider you less than some sort of insect. There's a chance that any semblance of a relationship might turn out to be one-sided, or that you would simply exist for him as a form of amusement.
He is one hundred percent a sapiosexual -- someone who finds intelligence highly attractive.
We know that he's a deep down kind of person when it comes to his true emotions. He's good at hiding what he's truly thinking and feeling until he becomes painfully honest about them, something that's a rare feat, however, if you're around, he might just be a little less jaded about things. Maybe.
He's likely allowed you into his life as some kind of cover story, something to make blending in to his surrounding society more doable -- He doesn't need easier, not at all. He's planned things so far ahead into the future that he knows it's foolproof.
For example: Where was "he" when the Hollowfication events to place? With you, of course... working on tasks together...
It's hard to say whether Sōsuke would use his Kyōka Suigetsu on you, but he'd be that untrusting, I'm sure, so he'd hypnotize you anyway, just in case you'd even think about betraying him. Would he make it known to you that he's done it? Definitely. He's not going to bother hiding it, and he hangs it over your head like a pendulum.
You won't be an exception to his manipulation tactics. If Sōsuke wants something out of you, there's no method he won't use in order to get what he wants. He has no shame the attempt, either.
He's still, quite obviously, human. Soul Reapers are always so worried about their mortality; their infallibility; their egos drive them, fuels their souls. Sōsuke would argue this to his death, that he could never be so weak, that even being a Soul Reaper is so below him. But you've seen him through it all, through his sudden decision to enact such an insane plan, to seeing things to near-fruition. You know the truth.
Sōsuke isn't someone who desires to be vulnerable -- not in battle, not in any sort of a relationship. It's not in the cards, and it's not something he's planned for from a decade ago. The fact that he's decidedly candid with you? It's one of the biggest surprises of your life.
But you're so whipped by him that you'll take what you can get.
Though maybe it's even Stockholm Syndrome and not just "whipped" because, well, he's Sōsuke Aizen.
He still has a major superiority complex, and that won't go away any time soon. There's a high chance that he'll end up talking down to you if you decide to stick around.
If any affection that comes from the man happens to be genuine, you'll find him to be quite possessive. He's not a man of jealousy, nor will he ever be, but you'll be his, an object, a possession. Sōsuke won't ever make it so obvious that you are an object to him because he's just so charming.
You're one of the few people to use his first name rather than calling him "Aizen". Saying "Sōsuke" at him invokes a sensation of being equals, and he knows that's why you say his first name. He allows it, keeping you on the edge of feeling some kind of control.
The whole situation he's concocted might stress you out a little. Whether you're on the side of the Soul Society or on Aizen's side, you know there won't be a great outcome and so for the majority of the war, you try your best to remain a neutral party, for the sake of things.
Don't bother being overly emotional around Sōsuke; he genuinely won't bother to care of your feelings. If they happen to come out around him, he's likely to ignore them. You shouldn't bother seeking emotional validation from Sōsuke, either; you just won't get it.
You have to be something of a constant interest to him, otherwise you won't even be in his sights. He wouldn't be an extremely passionate partner, with you initiating most of the interactions between you two. And, intimacy is rare. Seriously, expect very little of it.
Shunsui will allow short visits to Sōsuke during his stay in Muken, something that amuses the imprisoned man greatly -- Why bother? Seriously. He'd find it laughable whenever you show up, but you'll still give him updates on the Seireitei and its condition. But he did once call it his Soul Society. You're doing him an unnecessary kindness.
