Tsubasa RESERVoir CHRoNiCLE (2005)

S2E20 The Essence of Hijutsu

Kishimu has brought Syaoran and Kurogane into her realm, where they uncover that the attacks are orchestrated by Ryanban's son. He has discovered one of Sakura's feathers, using it to manipulate the minds of demons native to Kishimu's world. With Chun Hyang's assistance, can Syaoran and Kurogane put a stop to Ryanban's son and his sinister plans?