Hi there anon! Awwww, you should really read and watch Haikyuu!!, seriously, it’s good! The anime has superb animation and OST, and the manga’s great as well! I love it! :3

And about Kagehina, shippers might say that yes, it is canon. But in a general perspective, of course they aren’t romantically canon, but it is canonically established that they are friends (despite how much they deny it), volleyball partners and rivals. But seriously, shipper or not, their relationship is so adorable I just can’t put it into words! >.<