Just when I think I'm inured to the insanity of manga, something like Reiko Shimizu's Moon Child comes along.
This remarkable work combines total freaking insanity with gorgeously surreal images and an astounding amount of plot for a first volume-- concluding with the mangaka's explanation that volume 1 is just a prologue, and the story really gets started in volume 2! I can't wait!
Jimmy is a blonde amnesiac child living in New York City with Art, an abusive, washed-up Broadway dancer who may or may not have a heart of gold. But unbeknownst to either of them, Jimmy is actually Benjamin, the beautiful daughter of the Little Mermaid, who was one of a race of alien mermaids who must return to Earth to spawn by mating with each other and laying eggs!
There are identical twins or clones or creepy illusions of Jimmy, backstage drama, poltergeist activity, telekinesis, demons biting people's heads, giant catfish swimming through the air above Time Square, and dialogue like "Space is like an ocean. I can swim there. That's how I got here, to the Planet Asgard. I was just a hatchling back then, so it took several hundred years."
It reminded me a bit of Please Save My Earth, only with extra bonus insanity.
Warning: the leader of the mermaids is drawn as a bizarrely stereotyped African woman. This is especially unfortunate as Shimizu manages to include other black characters who are not your typical manga stereotypes (a doctor, random mermaids), thus lulling me into a false sense of security.
A complete and hilarious review, with pictures.