Fate/Stay Night, Vol. 2: War of the Magi
The Magi have assembled and the War for the Grail has begun. A  new battle begins as the next Servant attacks and draws blood. Who could  Rider's master be? Shiro must be extra careful as even his closest friends  could be deadly enemies. Nonetheless, Shiro isn't your typical master as he  reveals when he attempts to have Saber interact with his "normal" lifestyle  and introduces her to his teacher,  Ms. Fujimura and his close friend,  Sakura.