uchi_no_maid_wa_futeikei
Lovecraft-based light novel about a cute maid from unspeakable origins.
Written by Tassou Shizukawa, concieved by Ryou Morise, drawn by Ayakura Juu.
Manga-updates desc.: http://www.mangaupdates.com/series.html?id=99665
Official site: http://www.php.co.jp/smash/futeikei/
Partial translation: http://www.baka-tsuki.org/project/index.php?title=My_Maid_is_a_Formless_Entity