Konpeki no Kantai: Sourai Kaihatsu Monogatari
Konpeki no Kantai: Sourai Kaihatsu Monogatari, Kompeki no Kantai Special Episode: Development of the Sorai, Konpeki no Kantai Tokubetsu Hen: Sou
A special which tells the story of the development of the japanese Sourai interceptor plane.