Ten Days of Yandere

Mask (Yandere!Tendou Satori x Reader)

A/N: Tendou is probably the most likely character in Haikyuu to actually be yandere...unless there's a hidden yandere.*gasp*+_+ I do not own Haikyuu, the picture, or any of its characters. 

Yandere warning: obsession, sadism

"See you tomorrow, Ushijima! Don't push yourself too hard, alright?"

The stoic captain paused in his movements, affording you a glance over his shoulder and a thumbs up before returning to his solo practice. A second later, a wiry arm wrapped around your shoulders, a lithe body jostling yours. 

"Bye-bye, Wakatoshi! See you later!" 

The red-haired middle blocker didn't even get so much as a backward wave in acknowledgement. 

"You're so cruel to me, Wakatoshiiii!!!" 

Giggling, you grabbed his hand and pulled him towards the exit. "Let's go, Satori!" Smiling, he followed eagerly, his hand never leaving yours as you began to make your way home.

You and Tendou had been dating for a good six months now, your calm and sweet personality matching his own loud, cheerful temperament perfectly. Sweet public shows of affection were common between the two of you, both your friends and his smiling and giggling at your lovey-dovey displays. Not only that, but the two of you never seemed to fight either, something that was surprising considering how infuriating Tendou could be. Your relationship seemed perfect, the ideal romance everyone dreamed of having...

...Or so everyone thought.

"Stay away from Wakatoshi," Tendou murmured in your ear, his voice sickly sweet. You knew he was demanding, not asking. "I can't have him stealing you away from me, can I?" The question was punctuated with a sharp nip to your ear. When you didn't respond his grip on your hand tightened, making you wince. "Answer me, (y/n)! Wait, do you actually like him?!"

"No! I don't like Ushijima! How can I like him when I already love you?" The words fell from your lips easily, months of practice placating Tendou making them smooth as silk. Too bad saying them made you feel sick. 

"Good." Nuzzling his face against yours, you could almost mistake him for a jealous boyfriend, but you knew it was much worse than that. Tendou went beyond simple jealousy. You could already see the burst of obsession coming, could predict it as surely as the sun would rise tomorrow. "Remember, you're mine, (y/n). If any other guy even looks at you the wrong way I'll kill them."

The worst part about that was you were half sure he really would kill them. You certainly wouldn't put it past him. 

As Tendou chattered on about anything and everything next to you, you made the mistake of letting your mind drift, wondering what it would be like to have a normal boyfriend, a normal relationship with someone who wasn't half-way to insanity. When you'd begun this romance you had no idea what lurked just beneath the surface of Tendou's mask, merely thinking him to be especially eccentric. It wasn't long before his true colors came out and by then it was too late, Tendou wasn't going to let you go. Things had gotten easier over the past few months, but to say you didn't have regrets would be a lie. What you wouldn't give to go back in time and choose someone else...

You yelped as another sharp nip to your ear startled you out of your thoughts, making you jump though Tendou's grip on your hand didn't loosen. His other hand gripped your jaw harshly, turning your face to his. He still had that lazy smirk on his face, but his eyes were wide and unblinking, thoroughly disturbing.

"You weren't thinking about other guys were you, (y/n)? While I'm with you?"

"N-No, I wasn't, Satori."

"Hmm..." His hand tightened, nails digging into your skin and making you grimace. "I love that look of delicious pain on your face. It sends shivers up my spine and makes me more excited then you think~." 

"Satori, sto-"

"Make that face more for me." 

Surging forward, his mouth pressed against yours, all teeth and messy lips. You tried turning your head to the side, leaning away from his demanding mouth, but the red-head just nipped at what skin he could find, forcing you to face him. Your bottom lip fell victim to him, bitten to the point of bleeding as he dominated your mouth. After a few long moments, Tendou finally pulled away, a string of saliva connecting your panting mouth to his smirking one. 

"Ah, you're so beautiful like this, (y/n)~!" His arms wrapped around you, pulling you into a crushing embrace that held a slight undertone of violence. "I know! I think I'll spend the night at your place! Your parents will let me stay, won't they? They seemed to really like me when I met them!" You cried out internally and something of your horror must have shown on your face as Tendou hummed thoughtfully, his red eyes narrowing to slits. "Do you not want me to come over, (y/n)?"

"N-No, I d-"

"You know how much I hate liars, (y/n). Surely you wouldn't lie to me, would you?" His hand stroked the side of your face, his breath fanning over your ear as his voice dropped to a whisper. "You more than anyone should know what I do to liars."

You swallowed, schooling your features even as your heart maintained a panicked rhythm in your chest. "Of course, Satori. I'm not lying, my room is just really messy right now and it'd be embarrassing if you saw it." 

"Is that it? Oh, silly (y/n), you know I don't care about that!" His cheek rubbed against yours, the contact sickeningly affectionate.

A faint sigh of relief escaped from your lips, your shoulders sagging just the slightest inch. Whatever pain you could narrowly avoid was a small victory, even thought you knew Tendou would probably think up something worse for you tonight.

"Come on, (y/n)! I'm so excited now!"

'Great.'

Letting him pull you along, you took a deep breath and forced your mask to slide back into place, the mask of a happy girlfriend to match his of a loving boyfriend, silencing the cries for help you desperately wanted to release.

A/N: Can you tell that yandere isn't my strong suit? I should just stick to writing fluff.-_- Too bad I've already written 10 of these things.