You had worked in science labs in the Port Mafia. You talked to Akutagawa as slight friends. You pleaded with him to sneak into the lab and it worked. You both made it and you immediately told him what you wanted him to do. He agreed after some begging and he grabbed your wrist, biting into your palm between your four fingers and thumb. Drinking out of it to his own fill and licking it clean. You wanted to test the blood for any changes.