Flames of the Phoenix

Inko Midoriya has been lying for 12 years. But so has Hisashi Midoriya. The truth is that Inko and Hisashi divorced, and they each took a child. Izuku was not an only child, he has a twin sister: Cyra. Neither of the siblings knows about the other, for they were separated when they were three. Hisashi isn't even his real name, just another lie to keep Izuku from finding his sister. Cyra grew up believing her mother was called Myra. Their father is a quirk rights activist in America and sent Cyra to Japan to keep her safe from the political cross-fire.

There might be triggering things in this book. I will add them as they come up:
Death
Depression
Suicide attempt
Assault
Rape
I do not own any of the images. Some of them were from: https://picrew.me/image_maker/318008