I Am a Black Heroine

I used to be just an ordinary female high school student, until one day I picked up a blackened system outside and changed. In "A Different World from Zero", she became Fujino Asagami, who possesses twisted evil eyes, wandering in this empty land. In "Hero Academia", Yuexia Chuyu, who became a vampire, is the most dangerous enemy and wanders in the hero society. In the "Holy Grail War", the body of an alien god descended on a person named Sakura and appeared as a witch. "Pitch Black Bullet" turns into a pure white elf and becomes a pitch black devil, and uses the pure white savior devil to bring disaster to mankind in the current world. "Honkai Impact 3rd" became the other side of Ciel Fleur, Epelvain, who broke through the dimension in the sky and descended, Abigail Williams, Sakura Matou, Siren, Anastasia, Rita, Nezuko, "I don't know any of the above people, I just want to be with the cutest Sugar-chan," said a certain Kobe Shio who had no idea that he had been abducted. (Note: This article is purely a female protagonist, a high school student turned into a primary school student, a newcomer with a new book, and a writing practice) (World line: Main world - Zero - Hero Academy - Holy Grail War - Black Bullet - to be determined)