A "Natsume Nana" real Drama first challenge! Nana charms the Ai "Incest" that be not forgiven a younger brother loving Elderly Sister and her of the Bijin new appointment Female Teacher! !The close brother that Teacher, the younger brother go to the same school as a student as for the Elderly Sister "Nana." The obstinate younger brother who I torment it, and look good of delinquents is forced by delinquents to pirate nude of the Elderly Sister, but is imprisoned because I refused it…. The Elderly Sister which came over is insulted in front of the younger brother in a group by delinquents in order to save a younger brother.