The Sekirei are 108 mysterious, beautiful women who, together with their human partners known as Ashikabi, must battle one another in a fierce competition to decide who will ascend and claim the ultimate “prize.” But what is the true purpose of this deadly event, and what secret plans does its enigmatic overseer — the very person who discovered the Sekirei — have in store for them? Enter Minato Sahashi, a 19-year-old two-time ronin on the verge of giving up his dreams and heading home. That’s when Musubi, a well-endowed, cheerful, and innocent girl in a short miko outfit, quite literally crashes into his life. Suddenly, Minato becomes an Ashikabi, living with a girl for the first time — and this marks the beginning of a wild, chaotic new chapter in his life, one that’s often more than he can handle!