The Demon Lord Turns into a Little Girl, and the Saint Raises Me as Her Wife

[Western Fantasy + Saintess + Gender-Bending Transformation + Cuddling + Lighthearted Daily Life + Romance System + Sweet Romance] Bai Xin transmigrates as the Demon King, only to be defeated by the Saintess from her previous life and reborn as a white-haired little girl. To make matters worse, she's captured by the Saintess, who has also been reborn. "I am the Lord of the Abyss, the King of Demons! Let me go!" Iliya roars in a babyish voice, "Awooo~" But the Saintess, her old nemesis who once defeated her, gently holds her in her arms. "Sweetie, be good. It's time for your milk." Reborn as an orphan girl in the Holy Church of Light, Iliya is desperate to die. And to make matters worse, she's bound to a romance System [Ding! Sneak in while the Saintess is bathing to receive a 1% magic power recovery reward!] Determined to reclaim her throne, she swallows her pride and becomes the clingiest little sidekick at the Saintess's side. But gradually, she realizes something is off. Why is the Saintess looking at her more and more like she's her wife? Just as she's regained her strength and is about to run away, the Saintess pins her against the throne, her gaze dark. "Little Demon King, did you think you could leave after flirting with me?"