I thought to myself “What if I draw the volleyball captains?” and then I thought “ok but what if they’re all sea captains??” and then I thought “Why not Pirates???” and I think you can tell from there how we got to this point.
No but think about socially inept Kageyama, just wants to play volleyball, has no interest in being interviewed whatsoever no matter what level he plays. He has no idea what to fucking say. How do you get better? You practice alone and with your team. Full stop. He doesn’t care what anyone else thinks about him and if they don’t know how practicing works they’re beyond his help.
So for his entire career, until he retires, every question about his performance he ever gets he credits to Suga, because why not? Suga-san was a good senpai. Also he told him to.
And so Suga, who is now happily living as a teacher, or a nurse, or a fucking assassin who knows, gets fanmail every time Kageyama does something amazing because he must have been one hell of a good senpai.