Defective products.
Ochiai has been doomed to be destroyed since its birth.
Ochiai didn't understand why the creators insisted on being born on their own since they knew that they would become defective products. Is it because I am special?
Ochiai resisted the maker during an experiment and accidentally killed the maker. So people gave him the harshest punishment. They destroyed his companion body in front of Ochiai's eyes, and then exiled Ochiai to another world.