In this dreamy science fiction fantasy, Junko Mizuno illustrates a story full of catfights, alien safari adventures, evil experiments, and a girl who dreams of becoming a pop idol singer. Following the Third World War, humankind left the toxic surface of the Earth and built an underground city to survive. A serious social problem has emerged in this new society: hyperorexia, or severe overeating, a side effect of the "Pure Trance" life-sustaining pill. The story begins in the hospital which has been ruined by a tyrannical director, Keiko Yamazaki...

From Viz:

Meet Hansel, Meet Gretel. She's a little bit loudmouthed and aggressive, he's a little bit brainy and pudgy. And everything's fine in their tiny mountain hamlet--Dad's on medication, the local barber's selling diet food, and there's croissants for everyone--until one day a tiny lady shows up...and something goes horribly wrong in Hibari-cho. Can Hansel & Gretel save the day?