2016 Pokemon doujinshi by Chigirimaru

Greninja x Feraligtr, violence warning.

Official upload: https://www.pixiv.net/en/artworks/95392990

The artist included a description in English:

"Audile's childhood friend Gekkouga, who has turned into a mass-murdering demon, begs him to kill him.
His decision is made at .......

This is the second part of the story that connects the three years until Odile meets Fushigiso again.

This is the second part of the story that connects the three years until Odile's reunion with Fushigiwou. *It has been more than five years since it was published, so I'm posting it on pixiv.
*Please note that there are many deaths and missing scenes."