Kirameki Project [Special]

The tiny but technologically advanced Mediterranean island nation of Genes is ruled by three teenage princesses: the sensible elder Krone, reserved technical genius Kana, and busty and brassy Nene. When the giant robot Big Mighty comes to their island looking to engage in battle a giant robot its owner has heard that Genes is developing, the sisters spring into action.
While Krone directs things from the command center with the help of her Rose Knight Brigade, Nene assaults the robot physically with her powered suit, but it takes Kana reluctantly bringing out her ultra-powerful giant robot, soon named Junerin, to deal with the marauder. But Jin Ohya, the commander of the four-man team operating Big Mighty, has his own problems, and must prepare Big Mighty for a second go-around after being forced to retreat the first time.