In the dry riverbed of Arakawa River, undefeated elite Ichinomiya Kou (aka Rick) met the lovely homeless girl Nino, a self-declared Venusian. Their awkward love stirs up trouble among the other strange inhabitants of the riverbed.

Ichinomiya Kou has always lived according to the creed of his wealthy, successful family: never be in debt to anyone. But one day, under the Arakawa Bridge, his life is saved by a homeless girl named Nino. In order to pay her back, Kou promises to be her boyfriend; and thus begins his new life under the bridge.

Every 30 years, a new princess is chosen from the Hime family to serve the Hayagami. The time has come again, but over these past years, records state not a single female has been born, save for one, the 15-year-old Arata. The only problem is, Arata is actually a male! Forced to disguise himself and take the place of the princess candidate until a formal one can be found, he attends the festival only to witness the current princess, Kokuri-hime, murdered, and his own life is forfeit as well, by …

The story follows Elk, a bounty hunter in some strange futuristic world. On this world archaic but advanced technology exists side by side with primitive attitudes, beasts and magic. In other words it’s got a bit of everything. It also has an evil conspiracy who are able to produce powerful monsters called chimera, who can also appear as human. Naturally it is not long before Elk has rescued a young female beast-master and gained himself some serious enemies.

Fubuki Sakuragasaki is a powerful gamer who, with the power of her Passion Panties, climbs up the ranks of the BAG (Best of Arcade Gamer) tournament to become the greatest Arcade Gamer in the world. However, the evil Gulasic Group is out to conquer the world through said tournament, and their gaming skills will prove to be a challenge. Fubuki must team up with the legendary Mr. Mystery to combat the four Gods of Gaming and make the world of arcade gaming safe for all.

Felicitá is the one-and-only daughter of the Papa of the organization, maybe even mafia, known as the Arcana Famiglia. The Famiglia is made up of people who have made contracts with the Arcane cards, and have received special abilities due to this. The Papa has decided it’s time for him to retire and give up his seat to a new male who has control over an Arcane. To decide who in the “family” gets this seat, he calls for a tournament between Arcane-users. To the winner, he promises the “Papa” se…

Deep in the sandy plains of the Middle Eastern kingdom of Asran, Japanese photojournalist Makoto Shinjou travels to the remote airbase Area 88 to document the activities of the mercenaries who destroy the country’s enemies for a living. Among their ranks is Shin Kazama, a Japanese ace pilot who was tricked by his former best friend into signing a contract with the Asran’s fighter squad. Because of this, he lost his career as an airline pilot and the chance to marry his fiancee Ryoko Tsugumo. Now…

In the year 2059, the earth has been plagued by aliens for several years. In an effort to learn more about these aliens, Dr. Noguchi and his assistants Maki Agata and Tukuto Kenishiro try to revive the professor’s experiment, a large Bio-Mechanical alien named Frank. During this process the alien comes to ‘life’ and the lab is subsequently destroyed leaving Takuto the only survivor and the alien disappearing into the wilderness.

A 15-year-old girl, Mizunashi Akari, came to the Mars. It is the year of A.D. 2301, the Mars has turned into a planet of water by the terraforming, and now it is called “Aqua”. She came to the lagoon city, Neo Venezia, to become a “undine”, or a pilot of gondola.

In a continuation of the last series, Akari Mizunashi continues her job as a gondolier along with her friends from the other two rival companies, Aika and Alice. As they continue their training to become Undines, they continue to meet new people and partake on mysterious adventures, all in the quiet, scenic, and peaceful city of Neo Venezia.