Tsubasa Chronicle: Princess of the Birdcage Kingdom

To save Sakura, who has lost all her memories, Syaoran resolves to face certain death and visits the Dimension Witch. The witch reveals that the only way to save Sakura is to retrieve all of her scattered memory feathers from other worlds. To grant Syaoran's wish, a price must be paid, and the witch demands his relationship with Sakura as that price. Joined by Kurogane, a ninja from another dimension, Fai, a magician, and Mokona, their guide, Syaoran embarks on a journey across dimensions. Guided by Mokona, given to them by Yuuko, the Dimension Witch, the story begins as Syaoran and Sakura arrive in the "Birdcage Kingdom." It was once a peaceful nation where people lived alongside birds. However, due to the current king's oppression, rebels have had their birds confiscated, forcing them into miserable lives. The king rules his subjects using the power of mysterious feathers. Are those truly Sakura's memories? Separated from Kurogane and Fai, they fall into a dense forest...