月刊アフタヌーン
is a Japanese science fiction manga series written and illustrated by Hitoshi Ashinano. It was serialized in Kodansha's "Monthly Afternoon" magazine from June 1994 to February 2006, with a concluding postscript episode in July 2006, and collected in 14 tankōbon volumes. Parts of the story were adapted as two OVA anime series of two episodes each.