What's the story behind the item Celty is looking for?


I know Izaya

> has her legitimate head, but how'd she lose it in the first place? She's
> also a Dullahan, so I don't understand why she even wants her head back?




> Shinra's father stole Celty's head when she was asleep, and gave it to
> Yagiri Pharmaceuticals.  
>  
>  Celty wants her head back because it houses her memories.




> Shinra's father stole Celty's head when she was asleep, and gave it to
> Yagiri Pharmaceuticals.  
>  
>  Celty wants her head back because it houses her memories.

