Эп. 21: Курогане тренирует Сайярона, пока они расследуют охоту они, связанную с пером Сакуры и Сейсиро.

21

Kurogane tells Syaoran to blindfold himself and walk back to The Cat's Eye and that he cannot take the blindfold off until he can recognize presences. While training, Syaoran notices that Oni have the presence of something which is not alive. Kurogane and Fai leave Sakura at The Cat's Eye and go to talk to the lady that saw the new type of Oni. They find out that the Oni is created for the purpose of hunting. The new Oni seems to have Sakura's feather, and reveals himself to be Seishirō. (Source: Wikipedia)