Pandora in the Crimson Shell: Ghost Urn manga volume 20 features story by Masamune Shirow and art by Rikudou Koushi.

Poseidon Senior Executive Labrys reveals the full scope of the Apollo Seed Project and, in the process, attempts to recruit Robert Altman into the secret society's fold. When Robert refuses, Caduceus sees him as a threat—both to the Apollo Seed Project and to his beloved master, Labrys. Ignoring Labrys's orders to stand down, a crazed Caduceus moves to eliminate Robert. A final, fatal showdown now looms between the two. Who will be left standing?