Fukiko Ichinomiya

A very beautiful girl, unquestioned leader of the Sorority and President of the Student Council. Elegant and refined, Fukiko influences and controls everyone around her, determining their happiness or despair. She has a capricious character, both able of extreme tenderness and chilling wickedness.

She seems to have a liking for Nanako (and we'll gradually understand why) and she'll help her become a member of the Sorority, causing a real storm around the young character. Her attitude towards Nanako, however, will always be stressed by several ups and downs, mainly because of Nanako's relationship with Takehiko (and partly with Rei). The main target of her gratuitous wicked actions, however, is always Rei, with whom she has a mysterious and complicated relationship...

In her "anime" version we get to discover something more of Fukiko's past and secrets, and in general she's better described than the manga, revealing a "nobility" (especially in the end of the story) and dignity somehow lacking in her manga version.