Sekirei

is a Japanese manga series, by Sakurako Gokurakuin, aimed at young men. The story centers around Minato Sahashi, a ronin who failed college examinations twice. His life changes, however, when he meets a girl named Musubi. Minato turns out to be an Ashikabi, one of the mysterious set of masters that have the genetic trait that can become partners with some of the 108 cute girls, buxom women, and bishōnen called "Sekirei". Minato partners up with Musubi in order to win in the competition held by the mysterious MBI corporation.