Watch Highschool of the Dead Drifters of the Dead
Genres: action, ecchi, horror, supernatural
Plot Summary: An OVA of Highschool of the Dead bundled with the 7th manga volume.

Watch Air Gear OVA
Genres: action, comedy, ecchi, sports
Plot Summary: First episode is based on the 16th volume of the manga. Features Ikki vs. Ringo.

Watch Sora no Otoshimono OVA
Genres: science fiction, comedy, ecchi, supernatural
Plot Summary: The gang goes to an indoor swimming pool for some fun in the sun. As expected, all hell breaks loose when Tomoki goes on one of his perverted missions.
Meanwhile, Nymph is having some issues with the loss of her master and considers asking Tomoki to be her replacement master.

Watch Sekirei Pure Engagement Special
Genres: comedy, ecchi
Plot Summary: Episode 0 “Kanwanidai (two subepisodes: Sekirei Shindan & Sekirei Yoka)” of Sekirei ~Pure Engagement~ released on the first DVD and BD volume.

Watch Zero No Tsukaima Princesses no Rondo OVA
Genres: adventure, comedy, ecchi, fantasy, magic, romance
Plot Summary: DVD beach episode of Zero no Tsukaima: Princesses no Rondo. Also known as Zero No Tsukaima Princesses no Rondo episode 6.5.