The manga is based on the Majo no Ie – Ellen no Nikki (The Witch’s House – The Diary of Ellen) novel that author and game creator Fummy released as a prequel to the creator’s own Majo no Ie (The Witch’s House) horror puzzle game.
The March issue of Kadokawa’s Monthly Dragon Age magazine published the ninth and final chapter of Yuna Kagesaki’s The Witch’s House – The Diary of Ellen manga on Friday.
The original free game launched for PC in October 2012 and Kadokawa published the novel with illustrations by Oguchi in October 2013.
The game’s website links to an English translation for both the game and the novel.