The Demon Hunter's Vengeful Fox

Roxanne, a maid in Sterling Estate, was murdered by Master of the House Vincent Sterling for her Demon Core. Silas Sterling, Lord Commander, gave her warmth. Roxanne awakens Fox Demon power, infiltrates The Sterling Estate as a Concubine, vowing to kill her enemy. Silas Sterling enters The Sterling Estate to investigate Vincent. Roxanne uses Silas, entangling herself with the Lord Commander, as they jointly uncover the conspiracy behind The Sterling Estate.