After locating the location of an illegal drug manufacturing facility, agent Yukino infiltrates the enemy's hideout and leads the leader of the organization to arrest. However, due to a surprise attack by an enhanced human, Yukino is captured instead. Yukino is held captive in another hideout and begins various forms of training. What will become of her?
The story of agent Yukino, clad in a black suit, begins... (͠≖ ͜ʖ͠≖)