Demon Noble Girl ~Story of a Careless Demon~

Tags: Adapted to Manga, Age Progression, Age Regression, Beautiful Female Lead, Calm Protagonist, Charming Protagonist, Child Protagonist, Cute Protagonist, Dark, Demon Lord, Demons, Dense Protagonist, Depictions of Cruelty, Elemental Magic, Fantasy World, Female Protagonist, Heroes, Hiding True Abilities, Hiding True Identity, Humanoid Protagonist, Loyal Subordinates, Magic, Male Yandere, Master-Servant Relationship, Misunderstandings, Multiple POV, Multiple Reincarnated Individuals, Overpowered Protagonist, Protagonist Strong from the Start, Quirky Characters, R-15, Race Change, Reincarnated in Another World, Returning from Another World, Romantic Subplot, Ruthless Protagonist, Saints, Time Loop, Time Paradox, Unreliable Narrator, Vampires, Yandere