The flower seller's daughter, Misa, witnesses her parents brutally executed by General Sado for a trivial offense, as he enforces his tyrannical rule. Overcoming this tragedy, Misa swears revenge and ambushes General Sado while he walks through town. However, the man she attacks turns out to be an impostor. Misa is quickly overpowered and surrounded by his subordinates, left helpless and on the brink of death. Just as she believes escape is impossible, a mysterious warrior wearing a black mask—the enigmatic "Black Cosmos"—appears and saves her. He asks her, "Do you want to become strong?" His words stir something deep within Misa. But this choice offers no true salvation—it leads not to victory, but to a devastating, inescapable BAD END.