Cutlass

From Animeworld Network: Tsubasa and Tokimaru are brothers, though not related by blood. Tsubasa, who lost his mother at sea, recently begins to experience strange visions. Not long after, he and Tokimaru are pulled into another world, where they are offered a chance to find and rescue Tsubasa’s mother. In this unfamiliar realm, they encounter a mysterious pirate named Shroud, who captains a grand ship, and a peculiar man called Leda. Both men join the boys on their journey filled with various adventures.