The first season introduces us to the main characters in the story Keima Katsuragi, a 17 year old fan of the game bishojo , also called galges, Elsie and devil girl squad responsible for capturing fugitives souls on earth.
Keima Katsuragi is a student of second year of high school and a fanatical player of Galge. On the Internet it is known as Otoshi-gami because he is able to seduce every female character in this game. During the school day but it looks completely different and he has been nicknamed "Nerd", which is meant to be derogatory.
