Konpeki no Kantai is a Japanese alternate-history original video animation series produced by JC Staff. Based on a 1992 novel by Yoshio Aramaki, the series focuses on a technologically advanced Imperial Japanese Navy and a radically different Pacific War that was brought about by Admiral Isoroku Yamamoto's revival in the past due to unexplained circumstances. The series also features real-life 1940s figures whose first names were changed, such as Winston Churchill to Kingston Churchill and Adolf Hitler to Heinrich von Hitler. (Source: Wikipedia)

A special which tells the story of the development of the japanese Sourai interceptor plane.

Unaired episode included with the third Blu-ray volume.

Ayumu Aikawa is a 16-year-old high school student who is tragically murdered while investigating a suspicious house. However, he soon awakens next to a strange armored girl called Eucliwood Hellscythe. She reveals herself to be a necromancer who has revived Ayumu, consequently turning him into a zombie! Now immortal, Ayumu sets out to hunt down his killer. One day, while searching in a cemetery, he encounters a boisterous young girl named Haruna, who is fighting a bear with a chainsaw while dressed as a magical girl. After she kills the beast, Haruna attempts to erase Ayumu's memories of her, but he instead absorbs her magic for himself. Stripped of her powers, Haruna now orders Ayumu to take up her role of hunting strange creatures known as Megalo, monsters that roam the human world and terrorize the population. Kore wa Zombie Desu ka? follows the daily antics of the human-turned-zombie Ayumu as he begins his new, ludicrous life where the supernatural becomes the norm.