Manga by author Ohtaka Shinobu - Status ongoing

It tells the story of Sinbadearly life, when he captured the first Dungeon, Baal.

In a world similar to that of Scheherezade's tales, a mysterious young boy named Aladdin drifts from place to place with his djinn Ugo. Ugo lives inside a golden recorder, and Aladdin is on the hunt for his true container "The Djinn's Metal Vessel". One day he encounters Alibaba, a poor lad determined to enter one of the mysterious Dungeons that popped up a decade ago in order to make his fortune. Thus the the two begin their adventure in a Persia that never was.

Koushi Inuzuka is heir to an ancient family tradition of powerful martial arts. Unfortunately for his father, Koushi wants absolutely nothing to do with such dangerous things. His goal is to become an avenging prosecuting attorney, turning him into a bookworm that his father simply can't understand. Still, Koushi finds a great deal of comfort both in his studies and in the structure of law.Until the day that Momoko Kuzuryu, daughter of another great house, drops into his life and demands that he, the last scion of the strongest family of bushido martial arts, sire a baby with her.From that moment on, Koushi is forced to think and act faster than ever before as ever-stronger opponents appear to challenge him. The race to stay alive hinges on unlocking memories from his suppressed past and, possibly, unleashing his forgotten physical courage. And somehow, at the center of all those memories, stands Momoko.How can a wimpy bookworm survive the attention of skilled assassins for long? Then again, his opponents are discovering that some forms of strength have nothing at all to do with muscles or techniques...