The Emperor Gets Bound to a Green Tea System

I really can't keep writing this... Don't read it. This story is also titled The Entertainment Industry's Biggest Green Tea (Man Transmigrates as a Woman). Before dying, the old emperor Huining binds himself to the "Don't Be a Green Tea or Die System" to stay alive. He becomes the long-lost younger sister of a devoted male supporting character in a CEO romance novel. So His Majesty the Emperor not only changes from a man into a woman, but has to act like a concubine in the imperial harem every day, making use of all eighteen arts: pouting, acting cute, and coquettish behavior, all to complete missions and earn nutritional fluids to stay alive! System: Please make the best actor a cup of goji berry tea. System: Please give your benefactor a shoulder massage... Huining: I was an emperor in my previous life, damn it. An emperor. System: If you don't make the tea, you'll die... Huining: ... Reader's Guide: Set in a fictional world, with an overpowered protagonist and plenty of feel-good moments. This story has a romantic pairing. A man transmigrates as a woman, and the transmigration goes the other way. Theme: You look beautiful when you work hard