The World God Only Knows (神のみぞ知るセカイ?, Kami nomi zo Shiru Sekai) is an anime series based on the manga series of the same name by Tamiki Wakaki serialized in Weekly Shōnen Sunday magazine. The anime is produced by Manglobe, directed by Shigehito Takayanagi, series composition by Hideyuki Kurata, character design by Akio Watanabe, art direction by Ayumi Satō and Kayoko Tokō and sound directed by Yoshikazu Iwanami. The first season aired from October 6, 2010 to December 22, 2010 on TV Tokyo, TV Hokkaido and TV Setouchi and on later dates on TV Aichi, TV Osaka and TVQ Kyushu. A second season titled The World God Only Knows II aired from April 11, 2011 to June 28, 2011. A third season, titled The World God Only Knows: Goddesses (神のみぞ知るセカイ 女神篇?), aired from July 8, 2013 to September 23, 2013.
The series follows the exploits of Keima Katsuragi, an intelligent, gloomy teenager who is known on the Internet as "The God of Conquest" for his legendary skills to "conquer" any girl in Bishōjo games, yet ironically does not like girls in real life, where he is known as the Otamegane (オタメガネ?), a derogatory portmanteau of the two words otaku (オタク?) and Megane (メガネ?, lit. glasses). One day, out of pride, he accidentally accepts what he assumes to be a challenge for a Bishōjo game when in reality he has accepted a contract from a bumbling demoness named Elsie who asks for his help in capturing runaway spirits from Hell who are hiding in the hearts of girls. The only way to force the spirits out of the girls hearts is by replacing the spirits in the girls' hearts with himself (metaphorically speaking) by making the girls fall in love with him, much to Keima's horror. With the threat of death for both of them should he refuse, Keima has no choice but to help Elsie. Together with his intelligence and knowledge of the dating sim genre and Elsie's magical powers, Keima is about to embark on his greatest challenge.