Yumie Hiiragi

Eye Color: Brown
Hair Color: Blue
Age: 17
Cup size: F
Bust: 88
Waist: 56
Hip: 87
Affiliations: St. Mihailov Academy
Maria: Maria to Sasha
Element: None
Likes: Sports
Dislikes: Pervert

Yumie is the student council president at St. Mikhailov. She hit Tasuku in the groin after he suggestively flirted with her. She is later attacked by a student using and elemental circuit and save by Sasha who drinks her soma.
Yumie is later seen in volume six, working with Sasha, Mafuyu, Tauku, and the others and has befriended them.

Yumie is a very beautiful girl with back-length blue hair that she puts a bonnet on top to keep it out of her face and brown eyes. She is usually seen wearing the St. Mihailov Academy's uniform.

Yumie seems to be a very strict and violent girl as she hits Taisuku Fujiomi in the groin just for flirting with her. She is also seen to be very kind as she was able to befriend Alexander Nikolaevich Hell, Mafuyu Oribe and the others after being saved by Sasha.

(Source: Seikon no Qwaser Wiki)