Haikyuu!! Reader-Insert One Shots

Bad Habits (Tobio Kageyama x Reader)

He craved control from the very beginning. It was something he couldn't live without. The infamous King of the Court needed power over everything; the ball, his opponents, and even his own teammates. Especially his teammates. His position as a setter pushed false notions into his mind regarding his power-hungry demeanor. He truly believed he was superior to everyone around him and deserved to have such power.

This outward behavior of his may have dispersed for the most part after attending Karasuno High, but old habits die hard. He didn't just harbor this overbearing personality on the court. Whether he was on the court or off it, he still craved to experience the feeling of complete control.

Never before did he realize how that would make him act in a relationship. Dating was never something that interested it. At least, not until you came around. From the day you started working as the new team captain, he suddenly found it hard to concentrate. All he wanted to do was listen to your soothing voice and stare at your gorgeous smile all day.

He almost couldn't believe it when you said yes to him the day he asked you out. From that day on, just your presence alone made him a better person. He wasn't as easily angered or overbearing as he once was. He didn't need to worry about his team losing a game when he knew you would be there cheering on from the sidelines. You brought out the best in him.

Yet, at the same time, you unleashed his inner devil.

Jealousy is a dreadful emotion full of absolute loathing. It, alone, could cause someone to do and think heinous things. Kageyama was no exception to this. He could hardly contain the hatred that boiled within him whenever he watched his fellow teammates talk to you. It took all the strength he had to stop himself from knocking Hinata's teeth it when he noticed the redhead said something to make you giggle. As your boyfriend, only he could make you laugh. He wasn't about to let Hinata, the same person who was always talking all high and mighty about surpassing him, take you from him.

That rage inside him continued to build higher and higher as he helped his fellow teammates clean up the gymnasium. Only he, you, and Hinata remained as you were about to lock up the doors.

"Come on, guys! Let's go!" Hinata called as energetic as ever after running out of the gymnasium. You were ready to follow after him before Kageyama spoke, catching you off guard.

"You go ahead. I wanted to talk to [name] for a bit," he said, trying his best to keep his voice calm.

"Oh, okay. See you guys tomorrow at practice then!"

Both you and Kageyama waited for the other boy to disappear from sight before either of you dared to say anything. As much as he tried to conceal it, you could tell there was obviously something bothering the boy.

"Are you okay, Tobio?" you asked as you approached him. His face was rigid and stern. While this was usual for him when playing volleyball, he never looked that way around you. Did you do something wrong?

"What was so funny?" he asked softly.

"What?"

"What was so damn funny?" he repeated, his voice rising louder and louder with each word he spoke. "I saw you laughing at what Hinata said earlier."

"It was just a joke... What's gotten you so worked up over this?" You tried to place your hand on his shoulder in a comforting manner, but he merely pulled away and shot you a glare.

"I don't want you to be the team manager any longer."

"Excuse me?" you asked dumbfounded. His boiling anger was beginning to rub off on you and it took everything you had to not start screaming at him.

"You honestly think that I'm the only person on the team who likes you? The other guys were practically drooling over you when you first joined! Even now, I wouldn't be surprised if they jumped on you the second they saw an opening."

You could feel your tears forming in the corner of your eyes. His words were like knives cutting into you. Could he actually be that paranoid about losing you?

"Do you have that little faith in your own teammates?" you questioned, shocked by his blatant distrust in them.

"It's not that-"

"So you don't trust me, then," you deduced through gritted teeth.

"No-"

"You actually think I'm the kind of girl who would jump from man to man whenever an opportunity arose for me to do so? You think-"

"You're mine!" he shouted, finally exposing his true colors. His hands were clenched into fists and his body practically shook from rage. "You're mine and I hate it whenever I see you talking to the others; seeing you smile. I understand that it's your job as team manager to communicate with all the players and that's why I don't want you to continue as our manager."

The tears couldn't be held back any longer. They streamed down your face as you stared up at the boy before you. "I love you, Tobio, but you don't control me. You're not my king," you added bitterly, knowing how much he hated that derogatory nickname.

Those words were like a slap in the face for him. Despite how much he had been changing the past few months, his bad habit of craving to possessing power followed him off the court this time.

"I-I just don't want to lose you," he managed to choke out, realizing how badly he managed to screw up.

"You already did lose me."

He was speechless. He was paralyzed. All he could do was stand there with tears rolling down your cheeks as you walked out of the gymnasium. He lost the one person who he cared for just as much as volleyball and he was certain he could never get you back.

Bad habits can never truly break.