Ya beat me to it. But I would call it a nearly inverted Negima.
Negi's goal was always something outside the academy and girls inside of it got slowly attached to that goal in some way or form.
In here they are the plot and the MC's goal is definitely inside the academy.
Anyway looking...
Yeah, I dont get ppl thinking this is a sign of the manga ending. If anything, this is where chapter 1 left off. It really is that simple, to marry into money you have to be in places they'd hang out at the very least, so you'd need some money yourself or at least work where they'd be. That is...
Honestly I can see some rich nut buying a weird house purely for artistic reasons.
like those oddly shaped modern houses with crazy looking furniture for instance.