Hatching an original idea is not always easy for the Heaven's Design Team. With a meticulous client such as God, even the most confident of its members may doubt their ability to create a perfect creature that satisfies his demands. The whole team is then put to the test when God requests a single animal possessing five particular qualities. This strange animal may be one of the design team's biggest jobs yet! [Written by MAL Rewrite]

Tenchi Souzou Design-bu Special was exclusively released on Amazon Prime Video in Japan on April 1, 2021 as a bonus 13th episode.