The arrogant queen bee of the school, and the rival of Lala.
The arrogant queen bee of the school, third-year student Saki consistently tries to one-up Lala, stating there can only be one "queen" in Sainan High. She once tries to seduce Rito to make Lala jealous, but when that does not work, Saki takes up any excuse to physically assault Rito. She gains a crush on Zastin, only to be horrified when she discovers he is Lala's servant. However, this makes her very determined to win his heart, at any cost. Though she can be stuck up and prideful, she has shown a kinder side to people in need, as when she saved Aya from bullies and Riko (Rito's female counterpart) from the perverted principal.
In the anime, Saki attempts to seduce Rito throughout the series and does not look at Zastin the way she does in the manga.