Keima Katsuragi, a second-year high school student, is an avid bishÅjo game player. He is known on the Internet as \"The God of Conquests ( Otoshi-gami)\" for his legendary skills to be able to \"conquer\" any 2D girl in games. However, in his actual school life, Keima is known as otamegane, a derogatory portmanteau of the two words otaku and megane, and is considered nothing but an intelligent yet gloomy geek with glasses.
At the start of the series, Keima receives an e-mail offering him a contract to \"conquer\" girls. When he accepts it, thinking it is an invitation to a game, a demon from Hell named Elsie appears.
