I Am the Master of a Possessive Disciple

She was Heaven's favorite, blessed with good fortune. She wielded her sword to shatter the eight wastelands, her radiance equal to the sun and moon. Her beauty was peerless, and gods and demons across the heavens went mad for her. (Read this in the announcer voice of Hunan TV.) But what did any of that have to do with Feng Qingran? She was the heroine's cannon-fodder master, destined to risk her life for her and help her ascend and survive her tribulation. But after she died taking the tribulation lightning meant for the heroine, she not only failed to ascend, she nearly got branded a demonic cultivator. Feng Qingran: ?? System: Your disciple has fallen to darkness, and the plot has gone completely off the rails. You have to go back and make things right. Feng Qingran: My disciple? You mean my obedient, sweet, pretty, sensible A Ji? Feng Qingran: I don't believe you. :) System: I mean the one who's deranged, gloomy, perverse, and cold... Feng Qingran: I don't have a disciple like that. Yun Ji: Yes, you do. :) Watching Feng Qingran risk everything again and again for that person, getting hurt and bleeding for her, Yun Ji held back his wild jealousy and stole the position of sect leader and every opportunity from his junior sister. Until Feng Qingran died for her. He imprisoned his junior sister. Master, I imprisoned your beloved disciple. She can no longer walk the smooth path to immortality you laid out for her, and from now on, she'll be forgotten forever... Are you angry? Then please, Master, come and settle the score with me yourself. (Screenshot posted on Weibo on August 8, 2020.) Theme: True love above all