Yandere!Iida Headcanons

Hi! Could you do Iida yandere headcanons? If it can be sfw and nsfw it would be lovely, thank you <3

Of course! I love Iida and I think his brand of yandere would be pretty interesting :x He crosses me as a guilty, self aware type of yandere.

It got kind of angsty, just to warn you ;;;;; The first chunk of headcanons are SFW, and then towards the end I indicate when the NSFW starts.

Yandere!Iida Headcanons

He's absolutely terrified of his own possessive urges when it comes to you. The more he falls for you, the more he wants to keep you all to himself, to the point where he wants to hide you away from others. He's aware that it isn't normal, let alone something a good hero would do. No, that sounds rather villainous, actually. It's something Iida struggles with a lot. He strives to be a good person, worthy of the name Ingenium. He wants to be someone his family and the people around him can be proud of, he wants you to be proud to be with him. The darker, uglier side of him causes him a lot of distress, and he wonders sometimes, when you look at him, if you can see the darkness there. It makes him sick to consider it.

He ends up going to Tensei for advice. "Can you love someone too much?" and Tensei, thinking it's just Tenya, his earnest and good baby brother Tenya, being an overthinker, laughs off his concerns. He assures Tenya that there's no way he could ever love someone too much, and that love should be given to that special someone as freely as possible. Poor Tensei doesn't see the darkness in his little brother's heart, he doesn't understand what he just endorsed.

Iida still tries to hold back with you, still strives to be that good hero he wants to be. But he gradually slips deeper and deeper.

He meddles in your affairs. He views you as helpless (regardless of how competent you actually are) and finds ways to take tasks away from you, discouraging you from taking on too many (if any) responsibilities, insisting that it's for your own good, and he truly believes it. You might find yourself gradually losing more of your agency.

If you're also a hero, the absolute, white hot rage he feels when a villain manages to hurt you is hard for him to contain. He barely manages to stop himself from hunting the villain down (reminding himself, over and over, what he promised himself after the Stain incident). If he's on the scene with you, he's brutal with his interference, his engines roaring as he takes the villain down quickly and with excessive force so he can reach your side. His blood rushes in his ears and you look so frighteningly fragile to him. Why did you choose this life? It's not suited to you at all, it's much too dangerous. He wants to hide you away more than ever, lock you away from everything that can even think of hurting you.

Iida eventually spirals further down into his obsession with you, and it's tragic. This isn't the person he wanted to be. But as he takes away more of your agency, isolates you more, and eventually steals you away completely, he becomes almost resigned to it. Because the other option is letting you go, and he can't do that, selfish as that is.

If you grow scared of him, become angry with him or disgusted by his possessive nature, he feels awful about it, but he only clings to you tighter, fruitlessly begging for your love and forgiveness.

NSFW

Iida's almost frantic when he fucks you, holding you tight, engines revving, thrusting quick and deep. It's like he thinks you'll disappear on him if he lets you go. He whispers apologies into your skin, eyes misty. He feels like a pervert how much he wants you, the lust you inspire in him.

He wants to bite and mark you, paint your skin with his claim on you, but he can never bring himself to do so, not wanting to maul you like a beast. However, he leaves bruises from his grip sometimes, around your wrists as he holds you down, pressing you into the mattress as his hard body bears down flush against you. Or when he grips your hips and pulls you insistently onto his cock. He always feels bad when he sees them, but deep down it's satisfying, they're proof that you're his.

If it reaches the point where you know about Iida's possessive nature, where he stops denying it and he takes you away, he'd never force you to do anything in the bedroom. But it doesn't stop him from wanting you, so much that it hurts, so much that he can't hide it. The littlest things about you arouse him, and though he'd keep his distance, you're constantly aware of the heated stares he sends your way, the tent in his pants as he hurriedly excuses himself from the room. You hear him in the bathroom sometimes, the undeniable sound of him pleasuring himself, your name on his lips. Your dirty clothes disappear sometimes, returning to you freshly washed and neatly folded, and you know what they've been through.

(Requests)