Tsubasa RESERVoir CHRoNiCLE, Volume 7

Young Syaoran and his friends are on a quest to retrieve the magically potent feather-shaped shards of Princess Sakura's memory. The search has led them to the country of Oto, a world with the romantic feel of Japan in the early 1900s. However, another dimension traveler has shown up as well - the immensely powerful Seishiro, who first trained Syaoran. Now he and Syaoran are mortal enemies! Seishiro's first act is to kill Fai, beloved wizard and one of Syaoran's closest companions.