rewatched S4 last month and it always couldn’t get enough 

S2 and S4 are my fav so far, new visual, new characters, new teams show up etc. also it’s getting more crafted and exquisite in anime. improvement is obvious. (; Miya twins is interesting and thoughtful, I know someone doesn’t like Atsumu, because he’s impolite and ego  but what moves me is the relationship of them. it’s intriguing while u rewatch, likewise, I’m jealous them so much. Atsumu didn’t care everyone hated him when he was in primary/ junior, but Osamu knew it and cared him, so he still kept his company with Atsumu. move to high school, what impressed me deeply and I cried a lot is - when Atsumu is selected to Youth Campu, he shows off to Osamu, but Osamu doesn’t care bout it.

that fact is - he knows Atsumu truly loves volleyball more than him and has been working hard at the same time. he knows him the most. although Atsumu is like a trouble or being childish; unkind to ppl, Osamu still by his side and supports him actually. what a brotherhood  Osamu is the best gift happened to Atsumu undoubtedly.