Oscar: The Endless Project
Now, the group comes to a factory place where all the workers work constantly. They build up parts and then take them down again, making their work eternal. Oscha attacks by making the workers build the machine completely which is a giant gold robot that looks like Oscha. The group fights, but cannot destroy it. Kaze summons Odin to pierce through its armor and it is destroyed. Oscha escapes. Kaze leaves the group on their own and Lu decides to leave as well with a tearful goodbye to the children.
Aired 27/11/2001EP 9 - Oscar: The Endless Project

Final Fantasy: Unlimited
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.
(Source: Anime News Network)