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Identity: It's a fanmade MSA anime and manhwa.
Background: In the Meiji era, in 1897, before the 18-year-old first protagonist who is a young woman named Shiori was born just 19 years ago, her mother named Himari was the legitimate daughter of a history teacher at all girls' school where Himari studied and graduated and got married to Junichi not long after she got married. Then, years later, when Misumi was 22, she got pregnant and three months later, she gave birth to Shiori in a natrual vaginal birth, and the moment Shiori was born, she and Junichi saw something like this shining on her collarbone, it was a blue spider lily, she has the same hair color and eye color as Himari. But, however, when Shiori was 15, Muzan Kibutsuji killed her family and she scooped her youngest 5th sibling that is a 3-year-old boy named Ayato and they were the only survivors of the slaughter and Ayato accidentally became a demon and calmed down the moment she puts a bamboo muzzle on his mouth and slept in Shiori's wicker basket full of fabric. There, after she made her own funeral for them in the garage after cleaning everything and fixed the house properly. Afterwards, she became a demon slayer and her combats are called the Psychic Breathing and Shinto Breathing, not long after she became a demon slayer at the Demon Slayer Corps who joined to find a remedy to turn her younger brother, Ayato and back into a human and to hunt down and kill demons, and later swore to defeat Muzan Kibutsuji, the King of Demons, in order to prevent others from suffering the same fate as her, and was trained very well in Final Selection. However, what she didn't know is that Sanemi Shinazugawa was getting so mad at how much she passed and how she has a younger brother like Ayato this cuter. So, after defeating the spider demons at Mt. Natagumo, she was taken to the Ubuyashiki family where the hashiras are having a outdoor trial the moment she saw Giyu Tomioka, the same guy who tried to kill Ayato, but was shocked by her rock throwing. What happens next?