Sayako Nishizawa is an girl with dark blue long hair and blue eyes. She's thin and she wears almost always a skirt and a shirt.  She is almost 19 years old and works as a Nurse in a hospital. She nearly always does the night shifts. They're sometimes horrible. Sayako is drawing often in her freetime or go to the gym. She is doing also judo and has many fighting skills. That's why she always have some weapons with her that can protect her. Sayako is smart and serious but can also trick very good.