Youka Naze 名瀬夭歌
Project name Black White
Affilation Thirteen Party
Mentality: Abnormal and Minus
Abnormality: Remodeling
Minus: Ice Fire
Affilation: Currently Zenkichi's Student Council. Previously Thirteen Party, Medaka's Student Council and True Flask Plan.
Position: Currently is Vice-President. Previously Flask Plan Supervisor and Stand-In Secretary of Medaka's Council.
The researcher for class 13 and current supervisor of the Flask Plan, Youka Naze's real name is Kujira Kurokami, the older sister of Medaka and the younger sister of Maguro. While attractive and possessing a strong resemblance to Medaka, she favors concealing her face behind bandages and embeds a knife in her forehead since she dislikes the attention her face attracts.