This movie seems a little resistant to just-so explanations but it sure has a lot to say about class and gender. Lots of subspeciation of humanity into a bunch of fucked up little weirdos who can’t relate to each other.
Everybody’s alone and lonely but boys kill each other over it. The lack of humanity among the wealthy mirrored in our alien psychopath protagonist learning to walk among them.
The tailoring was gorgeous until the final act.