Reiko is one of the Orochi Necks of the anime Kannazuki no Miko.
Reiko is a serious and depressed girl that with no many characteristics. Reiko also is sage.
Before became an Orochi's Neck, Reiko was an unsuccessfully manga writer.
Reiko had a little feature in the story and only fight against Souma, with Corona and Nekoko. But, Souma defeats the three Orochi's necks.
After, Reiko tries to kill Chikane after she turns Girochi into a stone statue, but, become stone too.
After Chikane's sacrifice, Reiko become a normal and happy human.