This special follows the story of how Isaki Shuuji and Ruo Minai became Contracted Priest and Shikabane Hime.

Specials bundled with the Blu-ray and DVD volumes of Overlord featuring simplified character animations.

Lupin and Jigen planed to steal enormous money from a racetrack in New York. Their plan is perfect and the only thing remains is to wait for 6 days. To celebrate the success beforehand, they go to a town. 

Lupin parts from Jigen because he recalls another engagement. Then, Lupin saves a girl, Michelle, being chased by suspicious men. She asks Lupin to steal a diamond from her father in order to stop him from doing evil things. Lupin thinks he can get both money and a diamond 6 days later, and he accepts her request to guard her for 6 days. 

Meanwhile, Jigen meets his old fellow soldier, Ryatte, and they’re talking about another business. Then, Jigen is supposed to spends 6 days with Ryatte before the plan with Lupin. On the other hand, Fujiko and Goemon are planning to steal a diamond at a diamond exhibits. The host of the exhibition is… 

(Source: AniDB)

Afraid that his life may end at any moment, Otto Suwen begins writing a diary documenting all of his experiences. Now part of Subaru Natsuki's eccentric band of colorful characters, the apprehensive merchant is certain that new dangers lie ahead in their mission at Sanctuary. But amid the rising tensions, there are still moments of respite and reflection, ripe with opportunities to make vivid memories.