Last episode of Hipira-kun bundled with the DVD/Blu-ray release.

To escape the explosion of their ship caused by a terrorist attack, the parents of a young baby put him inside an escape pod and send him out before dying. The pod ends up on a planet inhabited by beings able to transform themselves into animals by using a special ring. The young baby is rescued by the royal family, and grows up to become the prince. When the planet is attacked by pirates, he will be brought by force to Earth and discover everything about his own origins, and forgotten brother.

Short specials included on the BD/DVD volumes of "Sekai de Ichiban Tsuyoku Naritai!"

These are a series of 13 omake episodes of Gun x Sword, tied in very loosely to the plot, with the characters as chibi puppets. The main characters are Wendy and her turtle, Kameo, who is the size of a human in this series and is able to talk. All the episodes seem to center around analyzing various events in Gun x Sword and mocking the themes displayed. They are included on the DVDs.