The Vanishing Life

Seishiro attacks Fai after he asks if Kurogane and Syaoran live there. It is revealed that Seishiro gave his right eye to Yuko to obtain the power to travel between dimensions but unlike Mokona he can only use this power a limited number of times. Fai gets cornered and is defeated. Seishiro uses Sakura's feather and the people in the world start disintegrating like a computer program. When Syaoran and Kurogane get back to The Cat's Eye they find out that Fai was defeated by an Oni and that Sakura may have been taken captive. When Syaoran finds Seishiro and asks him what happened to Fai, he tells him that he killed Fai. Seishiro stabs Syaoran in the chest with a weapon made from Oni. Syaoran starts disappearing but then Sakura comes running out and hugs him and they both disappear.