Kōbakutō no Yūrei

is a female in the covert service of Konohagakure and is one of its few womenly members. Befitting the swordswoman theme she bears, Yūrei is led to the possession of the Shinreiki (心霊器, Shinreiki lit. Vessel of Spectres), an ancient katana that apparently contains the spirits of its deceased wielders. These consciences bothered Yūrei as well, invading her dreams and thoughts with undesirable memories of wars. But the flashbacks only occur when she touches the steel blade itself. She happened to discover and wield the enigmatic blade in a weathered tabernacle after perusing its louche lore in a library. Many feared her arsenal thereafter due to the grotesque apparitions that spontaneously surface while it is unsheathed, and seemingly had also been the cause of numerous deaths by heart-malfunctioning. As a result, Yūrei is never given a task while the Shinreiki is by her side; and fellow teammates lent her an ordinary katana often. Given the fact that she is a member of ANBU and a notable one at that, Yūrei holds a name guise:. She is barely known by her true name among Konohagakure citizens, which she truly wants in order to remain anonymous and prolong the mystery behind her identity.