Maimaimaigoen: Episode 7 - The Lost Path

The children have made it back from the lab where Uropia's secrets are kept. A fragile hope exists that they might yet recover the friends they lost, but Okada remains unaccounted for. The mysterious girl tells them that Okada Yu re-entered Uropia on his own in one final attempt, and they make the decision to go in after him. He is found in the vast, pitch-black Okada Castle, which appeared inside Uropia without warning. When they storm the castle, they are confronted with the same challenges they already overcame — but the versions of themselves who face those challenges this time are different. They have grown through the difficult things they have endured. Confronted now with Uropia's true nature, the question is whether Okada and the children will be able to escape together.