Looking for something in particular...

DIFFICULTY: Requires /a/ and /co/ knowledge

I'm trying to find something, visual or nonvisual, that follows this equation:

[("Captain N" MINUS "Video Game Theme") AND/OR ("Kingdom Hearts" MINUS "Disney Theme)] MULTIPLIED BY ("Evangelion" MINUS "Giant Robot Theme")

So you want a book about a person thrust into another world they do not understand, with overtones of existentialism and technology?

The closest I can think of is The Diamond Age, by Neal Stephenson.