Danshi Ing Girl!
Other titles :
男子ingガール！, Dancing Girl!, Danshi-ing Girl!
Author(s) :Okada Haruki
From Shoujo Crusade: Karin HATES guys. She can't stand the sight of them, let alone be near them. But after a near death experience she finds herself waking up to a guy she doesn't know, within a guy school and in a guy's body!!?!