Naturally Sigma doesn't last long. The last thing he sees before his vision cuts is Neffa running away, which manages to comfort the Doctor. He keeps his legs moving almost by reflex, barely aware he's still running, and when he trips and slams against the candy road again he doesn't know he's fallen. This time he does not get back up, there's no lucidity in his eyes, he does not move voluntarily. Crumpled beneath his body, his limbs twitch irregularly.

Even if Neffa were still beside him, it would make no difference - in the last few moments of his life, consumed by the poison, their conversation has vanished from his mind. The only thing he's aware of is the torture and the darkness encroaching on his consciousness. For the first time in his long and multiple lives, Zero meets death eagerly.