Fate/stay night, Vol. 5

Shinji and Rider are up to no good again, and this time everyone is going to suffer.  As Shiro wrestles with the dramatic changes in Shinji, he tries to change his old friend, believing that there's still good in him.  Meanwhile, Shiro struggles to reconcile the growing complications in his relationship with Saber.  What does it really mean to be Master and Servant, anyway?