For this one-shot you be Kageyama are already in a relationship.
I hope you enjoy. ^-^

" I..." You mumbled , Before letting out a deep breath. Kageyama looked over in your direction , Rasing an eyebrow.

" Are you alright (y/n)?"

" Yeah I just.."

" What? You can talk to me (Y/n). If anything is bothering you , Let me know. We can get through whatever it is together."

"...I keep losing in Mario Kart."

"...Oh."