Masao Ohtake Books

Hinamatsuri Volume 1

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Nitta is an ambitious, young member of the Ashikawa-gumi yakuza syndicate. One day, a mysterious, oval-shaped object falls out of thin air into his apartment, and suddenly changes everything! Insid...

Hinamatsuri Volume 12

By Masao Ohtake

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Hinamatsuri Volume 13

By Masao Ohtake

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The Jadou Association’ s hired thugs have been sent running back to Western Japan, and the Oudou’ s hierarchy has managed to avoid complete collapse, thanks to the determine...

Hinamatsuri Volume 13

By Masao Ohtake

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Hinamatsuri Volume 14

By Masao Ohtake, MASAO KOHLER, STEPHEN OHTAKE

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Catch up on the very unusual lives of four 16-year-old girls living in Tokyo (stated age may or may not be accurate for characters visiting from the future).

Hinamatsuri Volume 15

By Masao Ohtake, Masao Ōtake

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When Haru was sent back in time by his mysterious future government, he was given one order: Make Rockllusion a reality. Now that he's located and assembled all the relevant individuals, he's ready...

Hinamatsuri Volume 14

By Masao Ohtake

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Hinamatsuri Volume 16

By Masao Ohtake

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apan is on the edge of a new era, and Nitta the Monster has one final piece of business to take care of: making amends with Anzu.

Hinamatsuri Volume 17

By Masao Ohtake

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Atsushi’ s unquenchable thirst for Rockllusion stands to plunge the entire nation into chaos. As much as they’ d like to avoid any association whatsoever, Hitomi, Nitta, and...

Hinamatsuri Volume 15

By Masao Ohtake

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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.