Wataru Yoshizumi Books

Ultra Maniac. Vol. 3

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Nina is finding out that being a witch-in-training isn't easy. When she finds out that one of her teachers is another witch from the Magic Kingdom, she is relieved--but should she be?

Ultra Maniac 1 Ultra Maniac

By Wataru Yoshizumi

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Ultra Maniac. Vol. 4

By Wataru Yoshizumi

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This is a story of Ayu Tateishi's hope of love and Nina, who studies magic. Their friendship aids them in overcoming the challenges set before them. Get ready for the ultra-cool, ultra-funny, ultra...

Ultra Maniac. Vol. 5

By Wataru Yoshizumi

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For as long as she can remember, Nina has wanted to attend the most prestigious learning institute in the Magic Kingdom. And now, finally, she getting her wish. But going awat to school means leavi...

Ultra Maniac. Vol. 1

By Wataru Yoshizumi

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Shy Ayu Tateishi's new school friend, Nina Sakura, is a witch-in-training. Unfortunately, she's about to flunk out of witch junior high school and all her attempts to help Ayu gain the attention of...

Ultra Maniac. Vol. 2

By Wataru Yoshizumi

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A boy from Nina's home dimension, Yuta, enrolls in her Earth school, making Nina very suspicious. Her suspicious are justified when he gives Ayu a camera that reveals true love and Ayu discovers th...

Marmalade Boy. Vol. 5

By Wataru Yoshizumi

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Marmalade Boy. Vol. 6

By Wataru Yoshizumi

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Marmalade Boy Volume 7 Marmalade Boy

By Wataru Yoshizumi

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Marmalade boy. Vol. 8

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.