Summary: This is their mania –their obsession, their enthusiasm, their craving. Nothing and no one can stop them, not even themselves. Not that they really want to stop, that is. Warnings: Kageyama/Hinata, drabble.

Disclaimer: I do not own Haikyuu. This is my first story for it. I'm doing this for you Little Fangirl1! Happy Birthday!

AN: Mania is a series inspired by Haikyuu including several pairings, inspired by a request from my personal friend for her birthday! None of the stories in Mania have to do with one another and will be uploaded as one-shots. So read in any order you of your choice!

"Mania"

Defined as "an excessive enthusiasm or desire; an obsession", synonyms for include: "obsession, compulsion, fixation, fetish, fascination, preoccupation, infatuation, passion, enthusiasm, desire, urge, and craving."

Obsession

Volleyball. Volleyball. Volley-ball.

From the time he gets up to the time he goes to sleep, and even in his dreams it is all he can think about.

Volleyball. The ball of volley. Volleyball

He can't even remember what his life was like before volleyball.

The precision, the flow, and… the satisfaction of having complete trust in his decoy.

Things were different in middle school, especially now in high school.

V.O.L.L.E.Y.B.A.L.L.

That's all that mattered. Friends? Allies? Interaction with teammates outside of practice?

Staring in the mirror he sometimes wonder who is staring back at him.

Volleyball.

Volleyball.

Volleyball.

Hinata. Volleyball. Happy.

Hinata. Volleyball. Angry.

Hinata. Volleyball. Proud.

Hinata.

Volleyball.

Hinata.

The stupid orange crow that won't leave his head.

Hinata. Orange. Stupid. Fast. Flying. Decoy.

Hinata. Decoy.

Volleyball.

Volleyball.

Hinata.

Grabbing a bite to eat together, running the mountain lanes early in the morning, even sleeping over at his house after studying all night.

Hinata.

Hitting his serves blind –completely trusting a stranger.

Hinata.

Volleyball.

Hinata.

Who wears short, shorts even in winter, has a delectable ass he doesn't get nearly enough time to stare at, and smiles so effortlessly –too effortlessly at everything.

Hinata smiling.

Moaning.

Jumping into his arms when they win.

Kiss. He wants to kiss Hinata.

He wants to hug Hinata. Touch Hinata.

He wants to have sex with him.

To kiss him breathless every time the two of them have an argument or even slightly butt heads.

To run his hands along Hinata's firm looking ass and see if it is more soft or more firm.

To make love to him sweetly every game they win, and roughly to free them of their frustrations at each loss.

Hinata.

Hinata.

Hinata.

Even more so than the volleyball that connects them –all he wants is Hinata.

AN: Mania is a series that updates each month on the 21st until Little Fangirl's birthday in 2018! This is what you make me do, Little Fangirl1. A simple one-shot with a lemon derails into a project of massive undertaking. Ugh…

PS. I actually almost forgot to upload this... I had a very long day at work and my brain is mush -but I remembered in time!

See you all next month with:

11/21 Infatuation