I'm convinced that the show was supposed to be an original story but in order for execs to sign on anything it has to be tied to an existing product/brand. So we end up with a wildly different tone but dressed in recognizable branding.

No need to pay script writers to revise drafts or costume/set designers for new designs. Just rename characters and make it vaguely like the source material.

It really felt like game of thrones when the brother and sister leads go to somewhere called "the cave of lovers".