[Demon Slayer: Kimetsu No Yaiba] I Want to Study Muzan

[Next time, I will definitely come back and write this after I finish my HP] First person [The protagonist is a ghost. She has incorrect views and is paranoid. Her character design is based on Liming Qing, but she has a bottom line and is chaotic and kind] [This book is not V, it is written for fun, and the fate changes] [CP Wubai, after hundreds of years Wubai is tempted, but the protagonist just wants to study Wubai] [The protagonist occasionally turns into a male or a child (for fun, Xue Wuhan changes his body)] I was born weak and sickly, with extremely light hair, skin, and eyes. Few people were willing to look at me. In their eyes, I was probably a weird and scary existence. Some naughty children even called me names like white ghost. However, I also had very little contact with them, because I could not bask in the sun, and my skin would appear red spots and blisters in the sun... I didn't like this look very much, and my family didn't like it either, so I was "imprisoned" at home. My parents and brothers and sisters didn't like me very much, and the servants didn't dare to communicate with the master casually. There was no one to talk to on weekdays, and I only had books to keep me company. … Things took a turn for the better one night. The weather was hot that day, so I called the servant to open the window for me and bring a glass of iced milk. The servant had just opened the window when a piece of meat fell on her. She made a desperate cry for help, but the scream for help could not be heard from my room due to the creepy "click-click" sound. I could have rang the bell and called for help for her, but I didn't. Because after devouring one of the servant's hands, the piece of meat actually "grew" a new body at a very fast speed. By the time the servant lost his breath and stopped his heartbeat, the piece of meat had turned into a man with black hair and red pupils. His red pupils were more terrifying than any beast. He was a real demon. I said dully: "What a miracle, what a perfect existence." … Then I was turned into a ghost, and I learned that ghosts are killed by sunlight, are not invincible, and need to eat people to gain strength. I disliked it: "It's not a perfect creature." But I want to perfect it. Purpose: research