A transfer student Asai Mugi is a painfully shy girl. She is so shy that she can't speak when she becomes seriously nervous. However, for some reason, she is spotted and recruited as a member of the drama club.

The year is 2356 A.D. - 189 years after a distant supernova caused a global catastrophe that wiped out 99% of the world population. To keep track on all space activities, mankind has built colossal space stations called "foundations" all over the Solar System. After passing the Space Academy entrance exams, Shima Katase embarks to the Earth-based foundation Stellvia to fulfill her dream of seeing the galaxy and to prevent another interstellar catastrophe from destroying Earth. (Source: ANN)

In the year 2032, the legendary idol unit "7th Sisters" suddenly retired from the industry and disappeared. That was the end of the idol industry... until two years later, when a young glory-seeking employee is appointed to be the leader of Tokyo's next generation idol studio, "777 (Three Seven)," commonly referred to as Nanastar. However, the city continues to believe that idols are a thing of the past, and Nanastar is no exception. Their slump continues, but one day a mysterious and beautiful female manager approaches you and says, "If the idols of the past are gone, we'll just have to make new idols! True "sisters" linked by powerful bonds!" The story of the idols of the future, the Nanastar Sisters, will now unfold. (Source: Tokyo 7th Sisters Wiki)

Special episode delivered to customers who pre-order all six Blu-ray and DVD volumes of Dog Days''.