Guard Corps of Yui in Black

The Guard Corps of Yui in Black is basically a fan club for Yui in Black.

Members

 * 1) Garasha Hosokawa
 * 2) Maria Kiyohara

History
It was formed when Yui was in middle school. The two were with Yui when she was hunting Mushi. They were with her when she faced off against Honoka Awadama but were quickly incapacitated.