Sugimoto Sayaka

Second year student belonging in the chemistry department. Representative of the Cultural Affairs Council. Silent and collected girl who almost never expresses her emotions, but she is strong willed and never gives in to others. Also an ace student with very high grades.

In Shiritsu Onsen Gakuen 2, worried about the "lesbian ban" done by the Morals Committee Chairman Akamine Reiko, she asked the protagonist to acquire signatures from students to overturn it.