Magi: Adventure of Sinbad
マギ シンドバッドの冒険 (original)
The Magi who became High King of the Seven Seas started as a boy determined to make the world a better place. He begins with a dangerous dungeon.
Starring Takahiro Sukarai, Daisuke Ono, Akira Ishida, Tomokazu Sugita
It's a animation and action & adventure show, and has a rating of 7.5 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from United States.