@HajimeteNHK Honestly I don't think satsuki (the blonde) is all that great, but from what I remember, to me, her yandere-ness compared to Ishihara (black hair) doesn't seem
as off to me. Ishihara's actions are odd, and she just has this very weird dynamic going on, whether it's between her and the MC, her mom, or Tokui (glasses friend); it all feels unnatural. You can check chapter 8.2, 29, or 34 for odd scenes with her and the MC. Satsuki seems more like a loner who is socially awkward and doesn't really understand personal space or human interaction (and some sort of background trauma that's been hinted at/not fully explained). Regardless, both are pretty yandere
Also, her fucking a ghost was an extra joke bit of sorts. I don't think that was canon.