Harry Potter fanfic.
Non-HP fans can also read this article as an ordinary fantasy novel, because it only touches on the basic structure of the original work and has many original elements.
Regarding Aurors, this gang of strong men, what kind of love and hatred are there? What grudges and ties do you have with Death Eaters?
Because of a mysterious X, the two forces of light and evil collided and sparked. Loyalty and betrayal, faith and wavering, there are no absolute good people and absolute evil people.