At the time when these stabilities he thought he could surpass, or embrace past by, was the time when thoughts like 'Death' or 'Weakness' didn't apply to a man such as himself, as long as he had Zylus's blood.
But it soon came to fruition; Zenos couldn't continue like this. With this lie that moral bounds don't apply to his conscience. Similarly to how Shakespeare wrote Macbeth, when killing Duncan, he had lost all meaning. And soon, Zenos, if he had continued to heal, would also lose this meaning.
Back then, when Zylus first went to recover his injuries inside the hospital, there were some leftover blood tubes in the same room Zenos was in. He deliberately injected them into his own body using a needle, and slowly but surely, he began regaining consciousness.
