Don't you love when fujoshi are busy shipping heterosexual guys that will obviously never be together, while we have a real yuri ship?
It's also great how every guy is attracted to her but she never gives a fuck about them.
She barely talked and never smiled in the first season, then when blondie showed up in the second season she started to smile (only to her) and talks a lot.
Spoiler because too cuteness
>Shimizu-senpai, today your hairstyle is different!
>It's because it was a bother... Do you want to wear it too, Hitoka-chan?
>I'll do it for you, sit down!
>Don't hold back!
>Ehehe, it's matching with senpai!
I hate to be that person, but: blondie is like a female version of Hinata (male main character) she actually joined the club because of his encouragement, and most of her scenes are with him or Kageyama (the other male main character).
The thing with the black haired girl is your typical "senpai admiration". You will need really tight googles to see it as anything else.
She was about to quit. Hinata's encouragement was what make her stay in the club. I don't mind shipping but this one is a stretch (hell, every pairing in Haikyuu is a stretch) Even more than that, all her scenes with Shimizu after she was recruited are exposition about volleyball.