Mizu No Kokyu (Media Works Bunko) [Light Novel]

[Machine Translation] Her sister, who entered the palace, returned less than a year later as a corpse. Suigyo, the daughter of a merchant family, grew up dreaming of becoming a great merchant who would straddle the great sea. However, her sister's too-beautiful death, which led to her being summoned to the imperial palace, connects Suigyeong with the intrigues that abound in the palace. After negotiating with Wenqing, the younger brother of the crown prince, who is investigating a mystery at the palace, Sui Jing becomes a courtesan like her elder sister. In the palace on the river, she is a rower and a secret spy for Wenqing. She uses her business acumen and observant eye to row the boat to the truth reflected on the surface of the water. A not-so-pure mystery in a pure and clean palace floating on the water.

入宮した姉は一年たらずで遺体となり帰ってきた―。大海を跨ぐ大商人を夢見て育った商家の娘・水鏡。しかし後宮へ招集された姉の美しすぎる死が、水鏡と陰謀うずまく後宮を結びつける。宮中の疑義を探る皇太弟・文青と交渉し、姉と同じく宮女となった水鏡。大河に浮かぶ後宮で、表の顔は舟の漕手として、裏の顔は文青の密偵として。持ち前の商才と観察眼を活かし、水面が映す真相に舟を漕ぎ寄せる。水に浮かぶ清らかな後宮の、清らかでないミステリー。