She is based on Tamotsu Yokoyama.
Kazumi was a flight instructor at the Yokosuka Naval Base, where many of the Fuso Imperial Navy Witches receive training. She was the one who taught Nishizawa Yoshiko how to fly and encouraged her into joining the Navy.
- World Witches: Contrail of Witches, cameo in chapter 8
- Comp Ace Illustration
- Humikane Shimada's Twitter