Japanese novel titled "Tennyo-yu Oren" (天女湯おれん) by Reiko Morota (諸田玲子).
Title: Tennyo-yu Oren (天女湯おれん)
Author: Reiko Morota (諸田玲子)
Publisher: Kodansha Bunko (講談社文庫)
Genre: Jidaigeki Shosetsu (時代小説), or historical fiction, specifically set in the Edo period.
Synopsis: The tagline on the cover, "湯屋の女将、おれん23歳。色でお上に楯を突く!" translates to "Oren, the 23-year-old proprietress of a bathhouse. She defies the authorities with her charm!".
