The full text is first person, female protagonist's perspective
Follow the order of Pokémon Dark plot, there may be private settings (if you don't like it, please click the red cross in the upper right corner)
Touko xN's story
The story of Hei 2 Touko going to find N will probably open up your imagination, and it will most likely end directly in Hei.
Intention: Realize that beautiful dream and regard it as the reality you pursue