Durarara!! Episode 12 English Subbed Episode Title:Yin and Yang.Episode Description:Celty defends Mikado from Seiji's attack. The redheaded girl appears and reveals who she is to the three. Mika had survived Seiji's brutal beating after discovering the stolen head, and she was given the choice of having her face reconstructed to that of Celty's, by a surgeon who revealed Celty's name to her. Also, Namie made her take drugs, in order to erase her memories, which is what caused her amnesia. Thus, Celty's head is still in the possession of Yagiri Pharmaceuticals. Celty then realizes that Shinra was the surgeon responsible for operating on Mika's face. She confronts him, and he reveals that he kept the secret from Celty out of fear of losing her. Celty forgives him. In the aftermath of the meeting of the Dollars, Seiji accepts Mika as his girlfriend for the time being. Celty accepts and enjoys her own existence, even though she has not yet found her head. It is revealed that Izaya was the one that sent Mika messages on her phone, he knew that Namie had sent her bodyguards to Mikado's home before they got there, and he told Mika to run away from Mikado's home. Izaya reveals that Celty's head is in his possession, and tells Namie that he believes in a Nordic mythological theory involving Celty; he believes that Celty is a valkyrie, an armored female angel who guides the soul of a fallen warrior to Valhalla, and that the reason Celty's head is asleep is because it is not on a battlefield. He wishes to be the warrior that Celty chooses, but in order to do so, he needs to start a war that only he can win.