From PRISMS: Wahhaman is a special robot soldier built ten thousand years ago by the Atlanteans. Found and dug up in present-day Toukyou, he doesn't remember anything, due to a nasty knock to the head he received at some point.

Humans are a despicable lot, committing sin after sin, filling the endless boundaries of the underworld with tortured souls. Now, it would seem, Hell isn't so endless after all, and it has become dangerously close to filling, and then overflowing into the human realm. Princess Lucuha sees this imminent disaster and has a plan: save Hell by making humans decent again. Of course, the Angels can't simply allow Demons to roam freely on Earth, and they do their best to stop Lucu and her dastardly plans. Nominated for the 12th Annual Osamu Tezuka Culture Award.

When a motley band of traveling performers have a deep-space collision with another spacecraft, they find that the sole survivor of the other craft is a humanoid infant. They decide to raise the child as their own on the nearest planet as they wait for other members of the girl's race to come and find her. Corona-chan grows up as their daughter, and the manga details her five-year-old adventures with her fuzzball mother, her robot-soldier father, her living-central-nervous-system pet, and the other bizarre members of the local village.