The Disappearance of Nagato Yuki-chan II

 is the twelfth episode of The Disappearance of Nagato Yuki-chan.

Plot
As Yuki becomes entranced by the library, she remembers that this was the place the original Yuki first met Kyon, who helped her get a library card. Kyon, however, remembers nothing of this encounter. Sensing that the consciousness of the old Yuki may be waking up inside her, Yuki starts to wonder what will happen to her current self once she does. In addition, she starts developing her own feelings towards Kyon, leading her to suspect her two personalities may be merging together. Seeing more of the old Yuki's memories in her dreams, Yuki begins to worry that she'll disappear completely once the old Yuki awakens.

Characters

 * Kyon
 * Yuki Nagato
 * Ryoko Asakura
 * Kyon's sister