I love Haikyuu and all the players of Karasuno. Recently, I started rewatching and totally forgot how much I disliked Tsukishima at the start.
But, the anime completely turned around my opinion on him. The backstory of him and his older brother. In addition to the short flashback of him meeting Yamaguchi. This leads into the Shiratorizawa match, where he has one of the best moments of the show.
Not only are the volleyball matches super intense (cheering for every point while watching lol). The character development is great.
So, I'd like to give some respect to the 'other' middle blocker of Karasuno - Kei Tsukishima!