Maboroshi no otogi

The group end up in a new world, Jade Country (ジェイド国, Jeido Kuni), where there is an old legend story about a golden haired princess who possessed a feather with magical powers and they are convinced that it belongs to Sakura so they go to a forbidden castle with a deep river surrounding it to try find some children that were abducted. While they are in town, they are taking refuge in the house of a kind doctor, Kyle.