A series of Gunbuster shorts included in the DVD release.

An unaired episode included in the Blu-ray box set. Yuusaku brings an extravagant bento box to share with the class, which makes Ryuuji feel inferior about his own bento making skills. Desperate to beat his bentos, Ryuuji obsessively tries to compete against them to the point where he even brings a rice cooker to school. After Taiga brings him some salty onigiri, Ryuuji realises that the true meaning of bentos is not the taste, but the feelings that are put into it. (Source: Wikipedia)

Living amongst the rest of humanity, there is a small number of people known as Attractors that possess strange powers. Fearful of these dangerous mutations, a highly secretive organization named Custos uses cyborgs from a group called WTOC to exterminate Attractors before they can injure anyone or disrupt the social order. Conversely, inside the theme park Fantasium Garden, there is a hidden group of Attractors who want to save their people from being eradicated by Custos. Led by the ever-optimistic Quon Mitsuchi, the Attractors take on intense fights against Custos's WTOC in the hopes of protecting the existence of their kind.

It is said that every few years, there is what's known as the Summer of Anu. During that summer, thanks to the divine protection of the sky-god Anu, all of the demons in the tower lose their power. The country of Uruk has begun an invasion of the tower in order to suppress the demons. They've built up positions inside the tower, with their sights set on getting to the upper levels. The Uruk army knows that this is the third Summer of Anu-a perfect time to launch a mission to suppress the monster Druaga once and for all. The army soldiers aren't the only ones in the tower, though. An enitre city called Meskia has formed inside the tower's first floor. It plays host not just to soldiers, but also to adventurers who have heard rumors about a legendary treasure called the Blue Crystal Rod, which is said to rest at the very top of the tower. With all these different groups in the mix, each with its own agenda, one can only guess how things will play out during this unusual summer. (Source: Newtype Magazine)