Her Tender Cage of Temptation

[Historical what-if + alternate setting + transmigrate into a book + dual Systems + one heroine + yandere + mostly slice of life]

Ling Ji transmigrates into a book, a world that blends several novels, and becomes a transparent male side character who doesn't even qualify as cannon fodder.

He plans to lie flat and keep his head down until the end, but one rainy night, he finds Xia Mu, an illegitimate daughter of a marquis's household, covered in blood. Her tearful, rain-soaked almond eyes cling to his sleeve as she softly begs, “Don't leave me behind.”

He never imagined this would be the beginning of his descent into the abyss.

The seemingly frail and harmless little bunny is actually an obsessive maniac with blood on her hands.

By the time Ling Ji realizes what she truly is, a red cord steeped in blood and tears has already wound around his neck. “A-Ji is my light, so I can only imprison you in the darkness, all to myself.”