Something feels off, that's not how typical yandere does, maybe even Shion isn't even a yandere, that "push" was an accident and everything is in Himari head...
Shion feels like genuinely concern about Himari, even asking her if it was her idea of cutting hair, because that is a typical form of bullying girls too...
Doesn't those two know Himari has a boyfriend? Pulling those moves ain't looking like what friends do...
Thanks for the scanlation!