Aria

Aqua and Aria take place in the early 24th century, starting in 2301 AD, in the city of Neo-Venezia on the planet Aqua—formerly Mars, which was renamed after being terraformed into a habitable planet covered in oceans around 150 years ago. Neo-Venezia, based on Venice in both architecture and atmosphere, is a harbor city of narrow canals instead of streets, traveled by unmotorized gondolas.
At the start of Aqua, a young woman named Akari arrives from Manhome (formerly Earth) to become a trainee gondolier with Aria Company, one of the three most prestigious water-guide companies in the city. Her dream is to become an undine, a gondolier who acts as tour guide (see Terms below). As she trains, Akari befriends her mentor Alicia, trainees and seniors from rival companies - Aika, Alice, Akira and Athena and others characters in the Neo-Venezia city. Aqua covers Akari's arrival on Aqua and her early training as a Pair, or apprentice, while Aria continues her training as a Single, or journeyman, culminating in the graduation of her, Aika, and Alice as full Prima undines.

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