1 Karasuno Yandere Headcanons
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(Sorry I didn't include Ennoshita, Narita, or Kinoshita... They don't have enough character development to write about)
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«Hinata»
Signs he shows when he likes you-
He acts all embarrassed and mumbly around you. He always invites you to watch him play volleyball. His friendship with Kageyama strains as he spends more time around you. Always asks you for help with homework.
How he acts when he's rejected-
He will seem surprised and will not worry about it at first, but repeated rejections about watching his volleyball practice will get on his nerves easily. He will threaten any other guy who gets around you even if they're taller than him.
When he snaps-
You better make sure you have good stamina. It doesn't matter how fast you are on your feet, he will find you. Despite is small stature, he can still put up a fight. He keeps that same intimidating look on his face while pinning you down.
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«Kageyama»
Signs he shows when he likes you-
Since he's always really anxious around new people, especially girls, he can seem a bit awkward. His sentences would be broken and weirdly worded. He would never do eye contact and would always keep a blush on his face.
How he acts when rejected-
Due to his past with having all of his friends leave him due to his different attitude towards things, he does NOT handle rejection easily. He will act confused at first while he tries to process what you said. When he does figure out what you said, you better start running immediately.
When he snaps-
Poor Kageyama and his temper issues... Keeping an angry expression while searching for you, he will tear the place to pieces in an attempt to vent his frustration. Tears will eventually start falling from his eyes if he can't find you. You come out of your hiding place at the sound of his crying, but you made a mistake. Kageyama will take advantage of this and harshly pin you against a wall. After yelling at you until his voice goes hoarse, he will pull you in for a bruising kiss.
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«Sugawara»
Signs that he likes you-
Suga is a sweet angel, so of course he would act extremely nice to you. He wouldn't always be watching you from a distance all the time since he doesn't want to seem suspicious. He always would smile around you, but he would gradually start to distance himself from everyone else.
How he acts when rejected-
Suga knows how to control his temper, so he acknowledges your own personal feelings. He may seem fine on the outside, but on the inside, he's a devil ready to strike at any moment.
When he snaps-
That devil inside of him is smart enough to not go out into a rampage in order to force love. He will try his best to find you when you're most vulnerable. Most likely is that he will lock you inside a room. Standing there in the dark, that angel-like aura vanishes as the devil takes hold. That sweet innocent smile is taken over by a sinister grin as he backs you up into a corner.
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«Daichi»
Signs he likes you-
Like Suga, he will act really nice around you. He would always offer you to come to practice after school promising to drive you home afterwards all the time. When you're around other guys, even Suga, he will get on edge. An intimidating aura will surround him whenever you talk to him about other guys.
How he acts when rejected-
Daichi is known to be very terrifying when he's angry, but he rarely shows it. Depending on how big the rejection was, his reactions will vary. If the conditions are right however, he will break right then and there.
When he snaps-
Don't be around him when he seems even slightly upset about something. His temper may flare at any second, especially if you're talking about other guys. He will find the nearest empty room and drag you there with a death grip on your wrist. After tossing you in there like a ragdoll, he will slam the door shut. In the dark room, he will glare back at you as he makes thunderous steps towards you.
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«Tanaka»
Signs he likes you-
He will act like a total dork around you like he does with Kiyoko. He will try to hog your attention all the time. Oftentimes, he will start to not mention Kiyoko at all.
How he acts when rejected-
Whenever Kiyoko rejects him, he keeps trying to get her attention no matter what. Same with you, but in a more, aggressive manner. He might often react with curse words or ramming his fist into a locker. He'll send you an intimidating glance before storming off.
When he snaps-
He goes from a dork to a monster in mere seconds. His temper snaps easily and you need to make a run for it. He will resort to tearing the area apart often spouting out dirty comments about when he will find you. When he does however, he will merely smile and whisper "no more rejections after this."
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«Nishinoya»
Signs he likes you-
He will be like Tanaka at first. Always trying to hog your attention and finding the littlest things you say to be funny. He will try following you around everywhere you go. Following you so close, that he will practically become your shadow. One instance happens that he almost follows you into the girls bathroom.
How he acts when rejected-
Noya has somewhat of a short temper. Depending on what he was rejected about his reaction will vary to a sad shrug, or a sudden snap and his temper exploding.
When he snaps-
Like Hinata, despite being small, he will catch up to you eventually. Do not hide in a closet or other small space. If he does find you in a closet, he will close the door behind him. He will find some way to pin you to the floor. After letting his rage explode and letting off several curse words at you, he'll swoop in for a sloppy, but possessive kiss.
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«Asahi»
Signs that he likes you-
Poor Asahi doesn't know how to talk to girls. His glass heart prevents him from talking to any cute girls because he's afraid they'll reject him. When he finds you, he will try his best to warm up to you. He might offer to make you lunch sometimes (he gets teased by Suga and Daichi for this).
How he acts when rejected-
(who would ever reject this cinnamon roll) Asahi will obviously tumble into an emotional limbo with his sadness. His eyes will start to water and you will feel remorse for what you said. He shakes his head in a depression and walks away.
When he snaps-
After realizing how badly the rejection hurt his feelings, that sadness will turn into a confused anger. He'll find you the next day, eyes puffy and red from crying. and he will take a breath. His emotions will explode and in his fury, he might accidentally hurt you. While you're knocked down on the floor, he cracks a smile and whispers to himself "I like this 'me' better"
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«Tsukishima»
Signs he likes you-
He's hard to tell if he's attracted to someone. He always teases anyone in a somewhat offensive manner. When he likes you, his offensive comments may turn into dirty ones. He may say that your clothes are always too revealing and will continue to call you degrading insults.
How he acts when rejected-
Tsukki never really asks for much from others, but when he does and you reject it, he gives mixed emotions. He may give off a smirk and continue to insult you to the point of that degrading dirty talk again. When that doesn't work for him, he may try to prod into your personal life.
When he snaps-
He wears the same emotionless expression around everyone, so it's sort of hard to tell when he's mad. He might ask you to follow him to a secluded place before pinning you against a wall. The degrading dirty talk gets more offensive and soon enough, you feel his hands trace features of your body. With another smirk, he descends onto your helpless form.
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«Yamaguchi»
Signs he likes you-
He's always shy around some new people. He might watch you from a distance daydreaming about maybe cutesy couple things. He will rarely approach you, but when he does, he usually stutters with his words. A blush covers his face so brightly, it covers his freckles.
How he acts when rejected-
With his history of dealing with bullies, his immediate reaction is to back away from the situation. When it's with someone he likes, all he can do is emotionally breakdowm. He hears your apologies, but refuses forgiveness and runs off crying.
When he snaps-
He will walk up to you one day after school with tears streaming down his face. After yelling at you asking what's wrong with him, he'll pin you against the lockers asking what he needs to do right. After being in shock with the situation, you stay silent. He grabs your collar and forced his lips onto yours until you're both out of breath.
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