Vampire-Vampire Fruit

"It's very difficult. Recklessly performing Gene Editing Modification on an adult whose physical condition has already stabilized could very likely cause both their genes and body to collapse. Embryos are chosen because babies in the embryonic stage have not yet developed consciousness. But if Gene Editing Modification is performed on an adult, it will inevitably alter the genes throughout their entire body, especially the brain. Once brain cells change, the outcome becomes completely unknown." Meikyō fell silent.