Smother me. Integral

Snake is a 13-year-old assassin who lost his name and his humanity when, as a child, his mother sold him to a human trafficking organization and turned him into a killing machine. The memory of his victims haunts him, but when he meets Rin, a blind woman, she becomes his reason for living. His desire to restore her sight drives him to accept a risky and dangerous job, plunging him into a new spiral of violence.