Demon Emperor, Behave: The Sweet and Delicate Mistress

[Happy ending, strong female lead, one-on-one romance, both leads pure] “Can even the supreme god have troubles?” Faced with this question, Yue Zirui smiled. “How could that be?” “First, if you have troubles, then there must be something you can't resolve. Being unable to resolve it, and going back and forth worrying about it, is a sign of weakness. The strong are never held back.” “Second, ‘supreme’ isn't something the person in question gets to decide. It's what everyone else agrees on.” ... “Behind every strong person, there ought to be a beauty who excels at everything.” Someone flicked their long hair and cast her a sidelong glance. Yue Zirui felt her eyes had taken a serious beating. She is the supreme deity. The ruler of the Six Realms was something she created by accident when she was bored. Her power is matched only by her beauty, and she has a solution for everything, even the one person who offered himself to her, whom she trained into perfect obedience. Until ten thousand years later, he vanished, his fate unknown. Only then did she realize how much he mattered to her, and the Six Realms learned that their mighty one had gone mad. The demon realm watched the busy gods flip through eggs, furious but unable to say a word... The demon realm watched as the mighty ruler of the Six Realms hid in person in the demon clan's forbidden grounds like a coward... And the divine realm? The gods said, “Her Majesty is going to turn over everyone's mansions, forbidden grounds, spirit springs, sacred mountains...” Their own ruler personally rummaged through their belongings and uncovered a whole bunch of spies. The spies were dumbfounded. They hadn't even done anything yet, and they'd already been exposed... My husband likes dressing as a woman / My husband became a courtesan / My husband is delicate and often ill... [Raising a husband is hard. Trying to date him is downright depressing.]