When the Nine Heavens Divine Lord, whose merits towered like a mountain, fell in a divine calamity, his soul shattered and he descended into the mortal world to be reborn. To help him return to his rightful place as soon as possible, the Upper Realm sent the Mystic Maiden down to assist him in transforming and overcoming his tribulation.
At the same time, the demon clan's ancestor, sealed by the Nine Heavens Divine Lord and asleep in Purgatory for a thousand years, awoke as the seal weakened.
When the ancestor heard that the Nine Heavens Divine Lord's soul had shattered and he had descended into the mortal world, she was overjoyed. To take revenge and wipe away her humiliation, she went alone to the human realm, intending to intercept and kill the Mystic Maiden so the Nine Heavens Divine Lord would remain forever in the mortal world and never reclaim his divine station.
But the Mystic Maiden survived, and the ancestor instead fell into a trap. She was told that if the Nine Heavens Divine Lord failed to overcome his tribulation and ascend, her soul would be annihilated, and she would vanish from the world forever!
The ancestor bit through her gums in rage, glaring at her mortal enemy, who stood within arm's reach. Then a plan came to her: If she couldn't destroy him, she would sully his body and stain that pure, immaculate lotus heart with the private passions and desires he had despised for thousands of years!
A little scene:
Outside the damp, chilly demon cave, the young demon lord stood at the tightly shut entrance with a tray of offerings. He pleaded earnestly, "Ancestor, it's been three days in a row now. The Divine Lord says that if you don't let him in, he'll smash another huge hole in the Demon Realm and build himself a residence inside it!"
Inside the cave, the ancestor was pinned against the window, facing off with someone. She gritted her teeth and glared at the rat spirit who had crawled in through a hole in the middle of the night. Panting, she couldn't manage a single word.
The culprit, completely at ease, even took the time to glance toward the cave entrance before leaning down and breathing in her ear.
"What kind of ancestor are you? You're clearly my little ancestor."
A short story. Don't think too hard about the logic.
Theme: Only by taking the initiative can a story begin.