Completely unrelated, edited out the "suggestive" tag, as I think it does not apply. True, Aoi was looking for financial assistance, but overall, with the entirety of the manga, there is no implication that anything occurred with her and the Johns. If someone wants to chime in and say it should be re-added, I can, as I think this is somewhat based on people's interpretations.
Also yeah, Hitode-chan is rather manipulative. I do think Mizuiro is in kind of a bind, because if he chooses to disregard or even act against her, the worst case scenario is everyone in the class slowly being consumed by the original "wish" of Takamori.