Kagari, a member of the "Anninshu," is a descendant of the shinobi who have lived between the powerful and the common people since before the Edo period. With the establishment of the modern state, the shinobi, deemed "unnecessary," changed their name and role to "Ninjer" and operated in the shadows of the giant city of Augus. One day, her former partner, the ninja Imori, suddenly appears before Kagari and asks her to take on a dangerous job. Imori, who works as a security guard for the reputable company Tris Farm Co., Ltd., wants to steal illicit funds from Tris Farm to secure money for his escape! Having been saved by Imori in the past, Kagari cannot refuse his request and infiltrates Tris Farm, but it was actually a plot by the "Anninshu" to take Kagari's life! Falling straight into the trap, Kagari is subjected to a torture of shame...
