Your dating atsumu, yes, but.. atsumu is also in love with kiyoomi. He has been since he saw kiyoomi play in highschool, and you were surprisingly okay with it. You didn't mind.
Atsumu is constantly flirting with kiyoomi, teasing him and being a smidge touchy. Though, kiyoomi acts like he hates it. He doesn't, he just can't expect the fact he fell for Atsumu fucking Miya. And you, along the way, of course. Atsumu knows it to.
"Omi, yer so damn pretty.. and hot as fuck." Atsumu drunkenly said with a flirty tone, leaning on Kiyoomi while his arm was around your waist. Atsumu had basically drank a whole bottle after you 3 went out drinking at a not-so-busy bar.
"Shut up, we're in public.." kiyoomi murmured out, he was also drunk. Hes surprisingly a lightweight, probably because he doesn't drink often.