Whoever holds one is given strength that rivals that of the Powers That Be. The retrieval of the feathers is made more difficult because the feathers, being fragments of Sakura's soul, hold huge magical powers. Fai gives up his tattoo, the focus of his magical ability, and Kurogane his sword, while Syaoran must give up the memories that Sakura has of her relationship with him. In exchange for their most prized possessions, she will grant them the ability to travel between worlds. Yuuko tells them that the thing which all three have in common is a wish to travel between the worlds: Syaoran to search for the feathers, Fai to stay away from his own world, and Kurogane to search for his home. Frankly, he couldn't care less he just wants to go home. The Ninja Kurogane, on the other hand, is the opposite he was banished from his own world for being too bloodthirsty, and his princess, Tomoyo, wants him to learn more about true strength before he can return. His goal is to stay as far away from his home world as possible and never return. Flourite has fled his home world after sealing away the god Ashura, and fears that Ashura will wake up for an unknown reason.
She agrees to help them, for a hefty price. In order to save her, he sends Sakura and Syaoran to the only person that can help her-Yuuko, the Witch of Dimensions. They have been scattered across the worlds, leaving Sakura an empty shell. The High Priest of Clow, Yukito, realizes that these feathers are the pieces of her soul. This causes Sakura to fall into an unwakeable sleep. After stepping on a symbol drawn on the floor, she seems to sprout ghostly wings, which then dissolve into feathers and vanish as Syaoran tries to save her. Just after Sakura decides to finally tell Syaoran her feelings for him, she's drawn to some ancient ruins on the outskirts of the city. Syaoran (see Spell My Name with an "S" below for other romanizations) is the adopted son of the deceased Adventurer Archaeologist, Fujitaka, and a dear childhood friend of Sakura, princess of Clow Country. The story begins in the Kingdom of Clow, a somewhat-medieval desert world. Alternate Universe versions of Cardcaptor Sakura characters Sakura and Syaoran travel from Alternate Universe to Alternate Universe filled with CLAMP characters to find the scattered feathers that represent Princess Sakura's heart and memories.