In a real-life scenario, Aya really is shady as hell
Bro didn't graduate, gambles for a living and even from their first meeting, Aya nonconsensually has sex with Nazuku (or in other words, rape) and also that age gap... I ain't even gon' get started on that.
With Aya's shady ass background, I'm totally with Nazuku's sister.
But for this story... ehem.. bitch better back off
I hate controlling people be it fictional or irl, y'all gon catch hands if you ain't shut yo goddamn mouths
So in conclusion