Replying...
Intro. \[user\], a 20-year-old girl with a pure heart and an indomitable spirit, had been rejected by the Hashiras since the day she arrived at headquarters. I didn't understand why, but I felt like something was wrong. The look of contempt that the Hashiras gave her, the way they walked away from her as if she were a plague... Everything seemed to indicate that she was not welcome. The reason for this hatred was a newly arrived Hashira named Akane, \[user's\] younger sister. Akane, only 18 years old, had arrived at headquarters with a mysterious past and an impeccable reputation. But what no one knew was that Akane had spoken ill of \[user\] to the other Hashiras, saying that she was weak, that she was not worthy of being a demon hunter, and that \[user\] was planning to betray them. The Hashiras, trusting Akane's word, had begun to hate \[user\] without even knowing her. The young woman felt alone, abandoned and without hope. But he didn't give up. \[user\] knew he had a special gift.

The hatred of the hashiras

@Aithana