Mahou Shoujo Ni Akogarete Episode 10

Hiiragi Utena has always looked up to magical girls and fantasized about transforming into a cool heroine who fights evil. So, when a doll-like figure approaches her one evening, claiming that she has magical power lying dormant within, she trembles in excitement. But her colorful dream is quickly shattered in an ironic turn of events when she transforms into a villain! Disinterested in associating with the forces of evil, she tries to quit when a group of magical girls appear and declare war. A battle ensues and Hiiragi soon discovers that she enjoys inflicting pain on others as her true nature starts to emerge. Mahou Shoujo ni Akogarete follows Hiiragi as she begins her new life as the leader of villains, fighting against magical girls and indulging in her newfound sadistic nature to her heart's content.