Responses
i think it's just haikyuu fanart :/ too bad there's no art credit
Aww.. Thanks though
it’s iwaizumi/oikawa fanart by Kizu Natsuki, the mangaka of Given! She draws a lot of iwaoi djs and goes by other names like gusari, sashikuzu, etc.
sashikizu*
http://www.mangago.zone/read-manga/yasashii_pantsu_no_nugasekata/mdx/d_chapter-5/1/