is a
utopian science fantasy manga by
Kozue Amano. The series was originally titled when it was published by
Enix in the magazine
Monthly Stencil, being retitled when it moved to
Mag Garden's magazine
Comic Blade.
Aqua was serialized in
Stencil from 2001 to 2002 and collected in two
tankobon volumes.
Aria was serialized in
Comic Blade from November 2002 to April 2008 and collected in twelve volumes. The series has been
adapted as an
anime television series, with a first season broadcast in 2005, a second season in 2006, an
OVA released September 2007, and a third season in 2008 that ended around the same time as the manga serialization.