Best-selling S. Australian novel is about Japan?

[Taro Toporific]

Question: Who writes the "best" tacky novels about Japan? Erik Lustblader?
Footy, fantasy and sex sells
The Advertiser / 5 Jan
...The biggest-selling South Australian fiction book was by one of the state's most successful authors writing under a pseudonym. An adult fantasy fiction novel, Grass for His Pillow, was written by Lian Hearn, better-known as SA children's author Gillian Rubenstein. Grass for His Pillow is the second book in Hearn/Rubenstein's planned trilogy of adult fantasy fiction books set in Japan.
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Amazon.com review:Lian Hearn's second novel in the Tales of the Otori, Grass For His Pillow continues to enrich and expand his mystical imaginings of feudal Japan....Takeo fulfills his debt of honor and accepts his heritage as a member of the superhuman cabal of assassins known as "The Tribe"...

[Neo-Rio]

I met Gillian Rubenstein when i first came to Japan. She was out here to get some insight on Japan for the third book in her "Space Demons" series. I guess her interest in Japan hasn't died off since.