Wataru Yoshizumi Books

Ultra Maniac 3 Ultra Maniac

By John Lustig Wataru Yoshizumi

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Marmalade Boy: Collector's Edition 1

By Wataru Yoshizumi

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The shojo rom-com manga classic that inspired the beloved anime--now in a large-trim omnibus edition with a new translation and bonus color content!Miki’s life was pretty ordinary until the...

Marmalade Boy: Collector's Edition 2

By Wataru Yoshizumi

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GAME, SET, MATCH!Ginta and Yuu are in the middle of their tennis match, but it’s not going so well for them. Ginta is totally off his game, but it has nothing to do with the bet he placed, an...

Marmalade Boy: Collector's Edition 3

By Wataru Yoshizumi

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FIERCE COMPETITIONMiki loves Yuu, but she’s got plenty of competition! The newest person vying for Yuu’s affections is no less than the school president, Miwa Satoshi. Just how close ar...

Marmalade Boy: Collector's Edition 4

By Wataru Yoshizumi

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EMOTIONAL ROLLERCOASTERMiki is ecstatic over her plans to take a trip with Yuu! In order to save up money, she gets a job at an ice cream shop—but disaster strikes when she’s working th...

Marmalade Boy: Collector's Edition 5

By Wataru Yoshizumi

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A PERFECT STORMMiki is blissfully enjoying life with Yuu, but stormy days are on the horizon. When Chiyako-san’s younger brother, Eisaku, shows up with his two daughters, they blow into the h...

Marmalade Boy tome 6

By Wataru Yoshizumi

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Mint Na Bokura tome 2

By Wataru Yoshizumi

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Random Walk Tome 01

By Wataru Yoshizumi

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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.