A seductive trigger, the tragedy of a female agent plunged into darkness! Kana Kusakabe RBK-090

Kana Kurosaki is assigned to investigate serial killer X. However, information about X is scarce; not only his name but also his entire background is unknown, and there isn't even a proper photograph. Kana's father, Goro, was a special investigator who also worked on X's case but died in the line of duty. Kana visits her father's former subordinate, Eiji Kagami, the man closest to X, and asks for his cooperation. However, this Eiji Kagami is X. Kagami takes a liking to Kana and uses drugs to take her consciousness…