Tokyo Ghoul √A, Ajin Recommendations
Dark world where humans and and "monsters" live in the same society. ( Ajin (demi-humans) and ghouls). Both protagonists are living normal life, studying in school when accident happens and they find out that they're not humans anymore.
Both main characters are being hunted by the police forces and special ops.
Both MC's experience a lot of pain and are subjects of experiments and insane abuse.
Lots of action, violence, gore, fight between humanity and ajin/ghouls.
Psychological, questioning morals of what's good and bad/right or wrong, and humanity.