The heroine Balsa is a skilled bodyguard and a masterful spear-wielder. One day she rescues Prince Chagum who has fallen into a river. The prince is carrying a mysterious spirit egg in his body, and is in danger of being assassinated by his father, the Mikado, who fears this will damage his imperial prestige. Balsa embarks upon a perilous journey when she accepts the queen’s plead to protect her son from her husband.
Segawa Rio, a quick-acting detective, gets transferred to the Tokyo Metropolitan Police's Violent Crimes Division after she got shot during her previous case. She is made to work together with Nagumo Jun, a level-headed but eccentric psychology professor whose skills at behavioral analysis are the key to tracking down the criminals. There's also Teranishi Kei, a shy young detective who's had a crush on Segawa since their days at the academy...
When his brother is taken hostage, loan shark Ginjiro must face his heartless past while attempting to shake the shadowy force threatening his life.
