Kō Gai (Kōfuku) ~ Huang Gai
Real Name: Sai

She is describe as Songo's longest and most trusted adviser. She played an essential part in getting Sheren and Meirin to stop fighting after the former drank the special wine that the latter purchased in secret for their special occasion. One of her pet peeves is being described or being exemplified as old, once retorting that she is not that old since there are men who turn heads when they see her.