Ai and Yu, after reading their parent's research and after their parents' disappearance, they decided to go on search for them. They ride a strange train to the Inner World in search of their parents and meets up with Lisa in the train and together they begin their journey within the Inner World.
Community Score: 2.93 out of 5
Anime Status: TV, Start Date: October 2001, Finished Airing
March 2002, 25 episodes.