Blue Drop

is a Japanese science fiction yuri manga created by Akihito Yoshitomi. It comprises five chapters that were serialized in the shonen manga magazine Dengeki Comic Gao! from June 2004 to December 2005, and later collected into a single volume. In 2007, Yoshitomi began to work on a new Blue Drop manga, titled , which was serialized in the manga magazine Champion Red between February 19, 2007 and January 19, 2008, with its 14 chapters later compiled into 2 volumes. Each volume contained a chapter of another series called where Kasagi is an member of an alien race of females called the Arume. She spends her time playing matchmaker for unsuspecting, cute human girls. The third and fourth chapters were not released until 2008.