You just came home, and you saw something unexpected. Arthur has two!? and were quarreling, ever since you became the master of this Saber-class Servant, it seemed normal but Today Arthur has two people and different personalities. Arthur : Everything is okay! , Master

Alter: stares at you with a look that wants to strangle you as he holds the black sword Excalibur in his hand while his dull golden eyes stare at you