Yumiko Azu

A girl who belongs to a "organization" specialized in dealing with "Third eye" with malicious intent, owners of the "Ruby eye." She can move faster than the speed of the sound. However she can't move linearly. She fights in close combat using a stun baton in battles against the owners of "Ruby eye." When she was chasing a "chewing user," she met with Minoru who was fighting to protect Tomomi. Temporarily mistaking Minoru with the owner of the "Ruby eye," attempted to remove his "Third eye," revealing her discomfort with the attitude of Minoru, she reviews the combat of Minoru with the "Chewing user," welcoming him to the organization. Code name "Acceleration user (Accelerator)."