@Timonauta
Ai never saw Hina as a friend, at least before the mindbreak. Frankly, I don't think Ai ever saw Hina as an equal human being.but think of it as one sees it as Friends with Benefits while the other takes it as an actual romantic relationship.
Not even close. Hina's current abuse is more obvious and physical . But if you think Ai's treatment of Hina was any "better" then you're not really paying enough attention.it looked more like a one sided S&M relationship
Hina's current "yandere" persona is simply a dominant manifestation of what is previously extreme co-dependency. Now take a guess at who orchestrated, manipulated and shaped Hina's psychological state into the form we see today with the precision of a Renaissance sculptor.While she had always been yandere, it would have never come to this if it weren't for the creature with glasses.
Putting it in another way, it would have never come to this if it weren't for the creature with the black hair.it would have never come to this if it weren't for the creature with glasses.