Overlord Blu-ray 04 Special

Overlord Prologue (1st Half) is a side story in the Overlord series. It was released on December 25, 2015 in Box 4 of the Blu-ray & DVD Collection.

Main Summary
The story starts before the guild Ainz Ooal Gown came into existence. It's about the clan Nine's Own Goal which Momonga was a part of. During their meeting a clan member Nishikienrai informs them that he discovered an unexplored dungeon known as the Great Tomb of Nazarick. During the meeting, the clan leader Touch Me announces to the members he would be dissolving the clan and re-found them as an official guild. A new name for the guild was decided and Momonga was recommended by Touch Me as their guild leader, which was accepted by all the members. As the guild leader he announce to conquer Nazarick in one try as their first mission for their new founded guild.

Full Summary
Suzuki Satoru returns home after another grueling day in the dystopic World of 2138. After eating a meal of multivitamins and liquid lunch, he retires to his chair and activates his Neural Nano-Interface. Through that device, he enters the DMMO-RPG game YGGDRASIL. Upon his entry into the game world, Momonga is greeted by Peroroncino. Momonga notices his armor is different, and asks how it came to be so. He realizes that Peroroncino used a Cash Item to enhance it, a direct violation to the No Cash Item Alliance creed. Momonga is disappointed in Peroroncino, but the later pleads it was the only way to enhance his armor. His pleas of forgiveness however make Momonga relents, admitting he likes the armor.

The two make their way to the meeting where the clan of Nine's Own Goal is taking place. At the meeting, Nishikienrai reports of an amazing discovery, a new dungeon located in Helheim. The clan agree to investigate the dungeon once the meeting is over. Immediately then after, Touch Me announces his intent to dissolve the clan, causing the rest of the clan to protest. Touch Me however informs them that he wishes to make Nine's Own Goal into an official guild, however he does not wish to take over leadership of the guild and elects Momonga as its first guildmaster. No one complains, satisfied with the decision.

Next topic begins with the name of their guild, it was decided that Nine's Own Goal could not be used. Warrior Takemikazuchi however changes the words of the original name and presents it as Ainz's Own Goal. The name is quickly accepted by the newly formed guild. At the end of the meeting, the guild depart to the location of the newly discovered dungeon.

Trivia

 * Information concerning the Neural Nano-Interface is only discovered here in this special.