Yukihime Fugi

Tentang

A shinobi and a professional thief who is among those who are interested in stealing and looking for some rare artifacts that are part of "Nanana's Collection." She and Shuu form a duo called "Phantom Thief Troupe Matsuri"; however, she would often beat up Shuu for botching up the job. As a shinobi, she very capable fighter who wouldn't hesitate to take down any opponents.

It was later on reveled that both she and Shuu are working for Juugo's father who is the head of the syndicate called "Matsuri."
(Source: ANN)