1) Discotek Media 
Diebuster, known in Japan as Toppu o Nerae Tsū! is a six episode anime original video animation (OVA) series created by Gainax in 2004. The first episode was aired on October 3, 2004, while the final episode was released on August 14, 2005. A movie, officially titled Toppu o Nerae! & Toppu o Nerae 2! Gattai Gekijōban!! retells and recaps the end...