Elemental Gelade Series by Mayumi Azuma

After a routine raid, rookie air pirate Coud discovers a most unusual bounty: Ren, an 'Edel Raid,' is a living weapon that reacts with a human to become a fighting machine. She is captured by an evil man. Can Coud and the agents of the Elemental Gelade Protection Agency team join forces and rescue her without killing themselves... or each other?

Coud, Ren and their mates from Arc Aile finally make it to the Leaning Bazaar. They encounter the strangest little girl that keeps pestering them. Coud clings tightly to Ren because of the Edel Raid thefts in the vicinity. There they encounter the dastardly and deadly Wolx Hound! Could he be the source of all the craziness in the Leaning Bazaar?

While Edel Raid hunter Wolx Hound is secretly meeting with a black market Edel Raid broker, Cou and Cisqua must race against the clock to keep the Edel Raids from being sold into a life of destruction. But when facing a foe as tough as Wolx, Cou may need more than Ren to stop this treacherous transaction!

Coud is back and training hard. During his training, he spots the great fighter Rasati returning home. He insists that she tell him her secrets to winning. Rasati promises Coud her secrets would be of no use to him. It seems her secrets can be too much for Coud to understand. Young adult.

Wolx is secretly meeting with an unknown Edel Raid broker. The stakes are high since Wolx is selling some very powerful Edel Raids. Cou and Cisqua must stop this dangerous transaction.

Rowen and Kuea are left on their own to defeat Grayarts, which requires sacrificing the ships mast, tying Grayarts to it, and setting him adrift at sea. But with assassins coming, is this such a good idea?

Fearing that Coud will be arrested, the party avoids the train and instead climbs up a mountain to a ropeway station - which has been closed for six years. While Coud works on fixing the ropeway car, Rowen and Cisqua become suspicious about Viro's unusual behavior. But before they can get any answers from her, her boss shows up and attacks them.

With Ren poisoned by Viro, Coud races against the clock to find an Edel Raid doctor that can save her life. But his quest takes an unexpected detour as the doctor informs Coud of another Edel Raid that has been waiting 500 years to be reunited with Ren. Coud seeks her out...but he is not alone, as another Viro assassin is secretly following him, waiting for her chance to strike...

While Coud and company make their way to the town of Tolo Dyle, more and more members of Organite find out Coud is in possession of the Shichiko-hoju. As if his profile wasn't high enough, this could really put him in harms way.

Rowen and Kuea decide to fight Romble as part of Rowen's determination to avenge Viro, but Kuea's attacks are useless against Romble's darkness attribute Adil Raid. When Gladias appears, everyone breathes a sigh of relief, until they discover what his real purpose is.