Mai-HiME Episode 7
Another new HiME shows up in the form of Nao. She is a little different in the fact that she uses her HiME powers to seduce young men and then rob them. Mikoto, in an effort to act more independent, joins Nao in her evil ways. Mai finds out what she's doing and she and Natsume have a stand-off with Nao, but Nagi interjects, telling them that HiMEs can use their power however they want except to battle each other. We also find out that Mikoto is in search of her older brother... who she was apparently very close to.