Overlord Bonus Volume

The Vampire Princess of the Lost Country (亡国の吸血姫) is a bonus novel by Kugane Maruyama in the Overlord series. It was released on April 27, 2019. It details an expansion of an alternate story of Momonga's journey into the New World.

Main Summary
On that day, the online game that caused a huge uproar. YGGDRASIL quietly end of service—————————it was supposed to———————However, the game did not log out after the end time. Somehow, a salaryman player has been blown away to another world.....

Keno, a lonely girl in a city where zombies crawl meets and travels with the strongest magician, confronting the Dragon Lord————Another legend that might have been Momonga.

Chapters

 * Prologue
 * Chapter 1: Encounter In The Lost Country
 * Chapter 2: The Two Set Off
 * Chapter 3: Five-Year Preparations
 * Chapter 4: The Beyonders
 * Epilogue

Trivia

 * In order to acquire the bonus novel, it is necessary to buy all three Overlord III Blu-ray bundles. Contained in Box 1 and Box 2 are tickets showing proof of purchase and subsequent orders to buy the next Box. The last Box 3 contains an application to order the novel costing 1500 yen.
 * Originally the novel was supposed to be released in March 2019, however, it was delayed a month later.
 * In contrast to the main series, Momonga was transported to the New World alone without the Great Tomb of Nazarick only with the guild staff and ring that are connected with it.
 * The Overlord Bonus Volume's Prologue occurred after Momonga made an edit to Albedo's character backstory in the main series.
 * Unlike his counterpart, Ainz Ooal Gown, Suzuki Satoru ended up in a different era and region of the continent.
 * Since the setting of this story takes place more than two hundred years ago, it can be safe to assume that the Adventurer's Guild had not been made during that time.