A mountain spirit is strangely attracted to the club members of the Roman club in the high school near her shrine … and thus begins all their adventures into the unknown.

Invaders from an unknown dimension prey on the loneliness of the human soul. The only thing between them and the success of their diabolical plan is 4 youngsters with powers to rival the invaders!

From ADV Manga: On the planet Aqua, a world once known as Mars, Mizunashi Akari has just made her home in the town of Neo-VENEZIA, a futuristic imitation of the ancient city of Venice. The technology of "Man Home" (formerly Earth) has not entirely reached this planet, and Akari is alone, having no contact with family or friends. Nonetheless, the town, with its charming labyrinths of rivers and canals, becomes Akari's new infatuation, along with the dream of becoming a full-fledged gondolier. Reverting to a more "primitive" lifestyle and pursuing a new trade, the character of Akari becomes both adventurous and heartwarming all at once.

From Tokyopop: After 150 years of terraforming, Aqua, the planet formerly known as Mars, now has over 90% of its surface covered by water. A young girl named Akari Mizunashi arrives at the city of Neo-Venezia, an exact replica of the old Italian city of Venice, hoping to become an Undine, the most coveted job on Aqua. Follow Akari's adventures as she discovers the wonders of Aria in this prequel to the popular Aria anime and manga series.

A 15-year-old girl living her life until another 16-year-old girl comes along. They find themselves becoming the best of friends as they each discover the wonders of their home. A story following the life of a care-free girl who loves the sea!