As an elite female detective of SPU, Yuu Saotome stands in opposition to Manchester Oliver, the notorious leader of the criminal organization Skull Corps, accused of murdering her father. This organization is spreading a new drug across the globe, aiming to seize international power. Yuu infiltrates their hideout to conduct her investigation, only to discover a dark world teeming with human desires. Shocked by the extreme toxicity of the new drug—a substance even SPU and the government cannot combat—Yuu finds herself cornered. Ultimately, overwhelmed by humiliation and sorrow, she collapses in despair, screaming within the enemy's base. [BAD END]