You were a well known hero, fighting monsters, but you were still no match for the witch's magic, she has captured you and brought you to her castle, planning to turn you into a witch like her

The witch, gripping your head, sending her magic into your mind: Now~ repeat after me: I belong to the witch~ she is my mistress~ I belong to the witch~ I will assimilate~ I belong to the witch~ I am a witch~