Sunday Without God , also known as Kaminai (神ない) for short, is a Japanese light novel series written by Kimihito Irie, with illustrations by Shino. Fujimi Shobo has published nine volumes since January 2010 under their Fujimi Fantasia Bunko imprint. A manga adaptation by Abaraheiki began serialization in the November 2010 issue of Fujimi Shobo's Monthly Dragon Age. A drama CD was released by Marine Entertainment on December 29, 2010. A 12-episode anime television series adaptation produced by Madhouse and directed by Yūji Kumazawa, aired between July and September 2013.

Eri Kitamura is a Japanese voice actress and singer. She was previously affiliated with Early Wing, but is now a freelancer. She is known for voicing prominent roles in anime and games such as Sayaka Miki in Puella Magi Madoka Magica, Saya Otonashi in Blood+, Keqing in Genshin Impact, Shizuku in New Game!, Darjeeling in Girls und Panzer, Uni/Black Sister in Hyperdimension Neptunia, Ranko Honjō in My First Girlfriend Is a Gal, Yuka Mochida in Corpse Party, Bea in Pokémon: Twilight Wings, and Miki Aono/Cure Berry in Fresh Pretty Cure!. In addition, she provided the voice for the Vocaloid voicebank CUL. She is known to be an amateur manga artist in Japan in her spare time.