A known underworld information broker and specialist for having vast information and knowledge on a number of subjects, she recruits Hei to take down the Section 3 convoy before he cuts off all contact with her. She is also known to the CIA, having met with one of their agents named Mr. Smith to locate Hei after he went rogue again.   ~!It is revealed that she had a relationship with Mao sometime in that past, and calls Mao by the name Ricardo.!~   source: Wikipedia.   ~!It is eventually revealed that as part of Shion&#039;s plan Oreille and Doctor Pavlichenko has built a super computer that has all the records of the world, observed by the Doll Network and all memories of mankind gathered by the ME Network.!~  

In the sequel, Hei and Yin are now on the run after betraying the Syndicate in the previous season. After leaving Japan, Hei encounters Suou Pavlichenko, a 13-year-old Eurasian girl who becomes embroiled in the war and politics of the various factions and Contractors vying for power. Meanwhile, Hell's Gate remains standing in Tokyo, after Hei's efforts to stop the Saturn Ring anti-Gate particle weapon from activating. Although Contractors are safe from the danger of having their existences erased, this does not prevent new and old Contractors from abusing their powers. As Misaki Kirihara and her team in the Public Security Bureau deal with the increasing Contractor cases, she also has to keep the Syndicate at bay, who has major positions in the Japanese police and intelligence bureaus around the world. The storyline setting primarily takes place in both Japan and Russia. <br><br>
(Source: Wikipedia)

Tells the story of what happened to Yin and Hei between the first and second series.