"Show your resolve if you want to get on the mission."...In order to take on a mission to protect her beloved master, Kunoichi high school girl Kohana crosses the line with her childhood pervy friend and ninja classmate, Toranosuke! Can Kohana handle the special naughty training required of her? Authentic ninja techniques, love, and non-stop thrills... This is the beginning of a naughty school romantic comedy!