I, the Ghoul, Is Aite's Unrelated Brother

(Single female protagonist + strong later stage + daily life) A person who has never watched Ghoul wakes up in Tokyo, Japan because he desperately wants a sister. Why don't you have a sister even if you have money? ! "Hello, my name is Fangcun Aite. This is my manuscript. Please take a look." Looking at the face that is very similar to your original sister, you decide to regard her as your own sister. *This fills you with determination* (Note: The author is still understanding the plot, so I don't have much to worry about when writing)