(The main story follows two timelines: the disciple's childhood and the Demon Venerable's adulthood.)
[Obsessive, unhinged, wolf-in-sheep's-clothing Demon Venerable gong x aloof, beautiful, powerful, tragic Immortal Venerable shou]
The radiant and noble Immortal Venerable Shen Suyu raised Shen Yunjin, the most reviled and feared demon lord in the world.
When everyone asked what she thought of her ungrateful disciple who had turned against her, Shen Suyu answered without mercy:
"She's nothing but a brat. I regret taking her as my disciple! Our master-disciple bond is over. We have nothing to do with each other anymore!"
Everyone applauded, praising the Immortal Venerable for putting righteousness above family and saying the demon lord deserved her fate.
Shen Yunjin wouldn't stand for that. She immediately dropped the surname Shen and took the name Yun Jin.
When the news reached the sect, Shen Suyu was teaching her new disciple to write. She only said two words, calmly:
"Let her."
Everyone knew that after hearing about it, the Demon Venerable shut herself away for a month.
Three months later, Yun Jin led her forces to the sect's gates.
Shen Suyu met her with a sword in hand. Yun Jin came unarmed, taking a step with every sword strike. Each blow pierced her body. Covered in blood, she smiled as she walked up to Shen Suyu.
Then she sealed Shen Suyu's spiritual power with a single palm strike.
When Shen Suyu woke, her hands and feet were bound to the headboard of the Demon Venerable's bed. Yun Jin sat on the edge, unhurriedly undoing her collar.
Shen Suyu closed her eyes in humiliation. "Xiao Yun, you weren't like this when you were little. Back then, you were so obedient. You did whatever I said."
"That was because you were my master back then."
Yun Jin took a faded sketch from beneath the pillow. It showed two stick figures, one large and one small, drawn crookedly.
"You said you regretted taking me as your disciple, so I gave your surname back. You said our master-disciple bond was over, so I smashed that title to pieces."
As she spoke, she tore up the drawing.
Yun Jin threaded her fingers through Shen Suyu's and pinned their hands beside the pillow.
"But now you're not my master anymore."
Kisses fell in a steady, tender shower.
When they parted, Shen Suyu gasped for breath, her wrists rubbed red.
"You lunatic! You ungrateful disciple!"
Yun Jin smiled, her eyes reddening. "You taught me."
She lowered her head until her forehead rested against Shen Suyu's. "In this life, the next, and every life after that, you won't get rid of me."
"Actually, you've been longing for this day too, haven't you? Otherwise, how could I have sealed your spiritual power so easily?"
"The righteous, dispassionate Immortal Venerable has fallen into the Demon Venerable's bed. Wouldn't that make a wonderful story?"
"Want me to open the bedroom door and let everyone else hear?"
Theme: Respect your teacher and honor the Dao