Kugane Maruyama Books

Overlord, Vol. 1 - manga

By Kugane Maruyama

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Overlord, Vol. 3 - light novel

By Kugane Maruyama

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While having success moonlighting as the great hero, Momon, Lord Ainz learns of a rebellion back home and returns to honor his guild not as Momon, but as Ainz Ooal Gown.

Overlord Vol. 3 light novel The Bloody Valkyrie

By Kugane Maruyama

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Overlord, Vol. 4

By Kugane Maruyama

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After the lizardman villages receive a warning that they will soon be destroyed, Zaryusu journeys to each village hoping to form an alliance against Ainz Ooal Gown and his undead army.

Overlord, Vol. 5

By Kugane Maruyama

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"In the kingdom of Re-Estize, a sinister organization known as the Eight Fingers holds sway over the criminal underworld. Ainz orders Sebas to infiltrate the capital and gather intel on this shadow...

Overlord, Vol. 2 - manga

By Kugane Maruyama

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Ainz, the undead overlord, is in dire need of better information about the world he's found himself in, and to get it, he travels to the city of E-Rantel. Disguised as a mere adventurer, he accepts...

Overlord Vol. 7 light novel The Invaders of the Great Tomb

By Kugane Maruyama

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Overlord, Vol. 9 (light novel): The Caster of Destruction

By Kugane Maruyama

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Overlord, Vol. 3

By Kugane Maruyama

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"It's go time as Ainz faces off against an army of undead, and the sultry assassin Clementine. Will victory here raise his notoriety even further? Mysteries of this new world are revealed as the fi...

Overlord Vol. 10

By Kugane Maruyama

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.