Episode 24

A band of demon exterminators head to a castle to defeat a demon. After they defeat the demon, Kohaku(A son of one of the exterminators) seemingly goes insane and kills the rest of the exterminators and is defeated by his sister, Sango. Because of her weakened state, she is easily persuaded by the prince of the castle that the one responsible for the tragic event is Inuyasha. She goes off, vowing revenge.