Cutlass

Tsubasa and Tokimaru are brothers, though not related by blood. Tsubasa, who lost his mother at the sea, recently starts to see strange visions. Not long after that he and Tokimaru get dragged into another world, where they are given a chance to find and rescue Tsubasa’s mother. In this foreign place they meet a mysterious pirate Shroud, who owns a great ship, and a strange man called Leda. Both men join the boys in their journey full of different adventures...

(Source: Anime News Network)