Usui Yoshino

Usui Yoshino (碓井芳乃) is a researcher from the Animal Activity Control Research Laboratory (動物行動制御研究所), who appears in the Toaru Kagaku no Railgun Archives 2 Audio Drama.

Background
Usui Yoshino was involved in research into controlling animals through the use of electromagnetic waves. After achieving success in doing so, she used the technology to carry out acts of espionage.