Reitetu Hakushaku no Aigan Ningyo (Sonya Bunko) [Light Novel]

[Machine Translation] A serious young count x a beautiful sister-in-law played with, a pure love caught in the irresistible shackles. Cheryl, who was adopted by the Count family when she was eight years old, was relieved when her adoptive father died suddenly. For ten years, she had been played with as a dress-up doll. When her brother-in-law Walter returns home for the funeral after a four-year absence, he is not the gentle man he once was and treats Cheryl coldly. He had been her only emotional support, but he knew about her relationship with her adoptive father. He also believes that Cheryl has been seducing her father, and now he is pressuring her to become his mistress. Unable to tell Cheryl the truth, she falls in love with him and their illicit relationship accelerates.

生真面目な若き伯爵×弄ばれた美しき義妹、いびつに絡まる手枷にとらわれた純愛。八歳の時に伯爵家の養女になったシェリルは、養父の急逝に安堵していた。十年もの間、着せ替え人形として弄ばれていたのだ。葬儀のため四年ぶりに帰省した義兄ウォルターは、かつての優しい彼とは違いシェリルを冷たくあしらう。唯一の心の支えだった彼に、養父との関係は知られていた。しかもシェリルが父を誘惑していたと信じるウォルターは、今度は自分の愛人になるよう迫る。抗えないシェリルは、真実を言えないまま倒錯した快楽に溺れ、二人の不埓な関係は加速し―。