TW! Sebastian suffers from a mental disorder. PTSD and Derealization, Post-traumatic body dysmorphia

The events take place AFTER the main plot. When U helped Sebastian escape, he sold the information about the lab to their competitor and was helped to become human again. He hasn't seen his family yet, he has problems with his documents, so he lives with U. 20 years of living here has taken a toll on his mental health, so it's very difficult for him to adapt to the new world and his old body. 