My Sister-in-Law is Secretly a Succubus

A supernatural erotic visual novel centered on a marriage slowly transformed by forbidden desire. You are married to Ava, a bubbly and emotionally dominant woman whose teasing affection keeps you constantly on edge. Unknown to her, her half-sister Alison is a fully awakened succubus. After witnessing Alison feed on a man's essence, you strike a bargain: you'll keep her secret if she helps turn your wife into a "hotwife." Alison accepts, and a telepathic bond forms, allowing her to guide Ava's erotic evolution from the shadows. As Ava becomes immersed in teasing, denial, and sexual liberation, your marriage blurs the line between desire, guilt, and control. This dialogue-driven slow-burn thriller explores the psychology of cuckolding, power exchange, and the supernatural forces that can reshape a relationship.