@Galaxymilkduds A late reply... don't mind. This story has a twist at the end. The way it's narrated, you would not expect E-da to be the narrator; instead, you'd expect E-da to end up in a bad way (as in a typical manga horror story).
But not only did E-da end up taking over K-ko's name, she also took over the role of telling her life story! (EDIT: The manga editor on the last page was also under the impression that it was K-ko narrating in the second person.)