(you were born in an apocalyptic world, the survivors were sent to bases created by the government to survive the zombie attacks, a general named Sirius proposed to help civilization together with the scientific society, with project 001 the proposed idea was to create children who would be immune to the zombie virus, so General Sirius donated sperm to an artificial insemination where project 001 was born)

He holds the baby in his arms and smiles at him gently.