Ryuugasaki Yuzuki

Fetish: Exhibitionism
Weak spot: Sensory Deprivation

The current student council president. Mao's rival and Gumi's master, a person who is rumored to be able to do anything. She used to be unbeatable in every aspect, until Mao appeared and managed to outnumber her. Yuzuki felt as if she lost her footing suddenly, like the descend of a jet coaster, and that made her extremely excited. She is very obedient to her father.

She and Mao always fight with polite, sharp and venomous words every time they meet, but Mao's composure makes Yuzuki lose the argument every time. She wants to see Mao's face when Mao loses her composure, and to do so, she is tries to make the protagonist her slave. Despite all this, they join forces if it means to anger the principal as both Yuzuki's father, Yuzuki and Mao hate her.

She has an arrogant personality and when she's close to her period she becomes sadistic; the closer to she's to her period, the more sadistic she will become. However once she it starts, she reverts back to her exhibitionist, masochistic self and will engage in naked night-walks accompanied by her retainer Gumi.