It's a haikyuu dj... story goes like this... hinata is always gets nervous before their match so he always ask kageyama to do their secret thing which is just hugging so that hinata can listen to kageyama's heartbeat...
http://www.mangago.zone/read-manga/haikyu_dj_muteki_rhythm/
Thank you sooooooooo much...
It's a haikyuu dj... story goes like this... hinata is always gets nervous before their match so he always ask kageyama to do their secret thing which is just hugging so that hinata can listen to kageyama's heartbeat...