He escaped Zygote in a zeppelin, taking with him Zykey, a young woman whose mysterious Nil-nil disease prompted him to become the genius he is today. His quest is to cure her of the disease, which makes her disappear gradually. Lady Ruliya catches up with Alcantara before this, and they duel underwater for the sphere. Ruliya manages to beat Alcantara's masterful swordsmanship in the end, but they emerge from the sea to find that sinister, demonic powers have been plotting to take the sphere for themselves. A great battle against the metal demon ensues, and only with the help of the forces of the Underworld Knight Tagmec can Ruliya finally defeat it with her magic blade. Ashika also denies the demon the sphere by absorbing its light into himself. Alcantara finds himself seemingly defeated and his inventions in ruins, but finds out that he has found the cure for Zykey's disease by providing her with adventure and a happy life. Zykey reveals her love for Alcantara, and a marriage is arranged. But Alcantara is rescued by his henchmen and flies off in a new zeppelin, followed by a determined Zykey. Characters Ruliya of Perla is a young knight in training, on the quest required to become a true knight. Like all knights of Marmundo, she rides an orca and wears a massive, magical armor that increases her strength and allows her to fight under water. Ashika, a young boy who has grown up on a small island with his father Arrabarus, is an impulsive, emotional child who is as naive and uneducated as he is optimistic. But as he becomes Ruliya's squire and is kidnapped by Alcantara, he is forced to grow up and learn about the world. Arrabarus, a giant, scarred old man, claims the title of king of the lighthouse island, but has a history as a great aqua knight. Niselle seems to be a glowing sphere that is the light source of Arrabarus' lighthouse. However, he claims it is his wife and Ashika thinks of Niselle as his mother. She holds some mystic power that Alcantara as well as evil spirits want. Alcantara, a wandering genius, nobleman, and inventor, has fled his homelands in search of the elixir of life, of which he believes Niselle is an ingredient. Although he seems to be singularly dedicated to his discoveries and inventions, he has softer sides hidden under layers