Durarara!!

Synopsis

Seiji and the redheaded girl are in the park. When Seiji leaves to buy drinks, the redheaded girl drops his phone into a fountain. Namie becomes nervous because Seiji cannot be contacted or found. Worried that the police might find him, Namie decides to handle the situation herself and goes to talk with Izaya. She remembers her childhood where she and Seiji were often together while in the care of their uncle. Namie had asked Izaya to find Seiji. After she learns Seiji has fallen in love with the head in her uncle's study, she moves it to her pharmaceutical company. Shortly after, the head had been stolen. One day, Seiji calls her to say that he apparently killed Mika after she crept into his room and discovered the stolen head. Izaya informs Namie that Seiji will be shortly in police custody. The girl receives a message on her cell phone saying she is being pursued and attempts to run away with Seiji. They pass Celty and Shizuo and she recognizes the girl's face as her own, urging Celty to chase after her. Shizuo stops Seiji and becomes infuriated at how Seiji says he loves the redheaded girl. After stabbing Shizuo, Seiji chases after the two women. The girl bumps into Mikado, who helps her escape. Shizuo catches Seiji and leaves him with bruises. Shortly after, the police apprehend Seiji. Namie states that she had the redheaded girl created from Mika's body for Seiji. Shinra questions Celty to know what she wants to do with Mika and her head. Namie later orders her bodyguards to find and retrieve the girl, and if necessary, to apply deadly force to accomplish their task. Also, Mikado houses the redheaded girl, now recognized as Mika, and he perceives that she has amnesia. (Source: Wikipedia)