Masakazu Katsura Books

I s Volume 12 I S

By Masakazu Katsura

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I s Volume 13

By Masakazu Katsura

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I s Vol. 14 I S

By Masakazu Katsura

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I s Vol.15 I S

By Masakazu Katsura

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Video Girl Ai, Vol. 1

By Masakazu Katsura

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Yota Moteuchi, nicknamed Dateless, is unpopular and in love with a girl who is in love with his friend Takashi. But when he plays a rented videotape starring the cute, young idol Ai, she promises t...

Video Girl Ai Vol. 2

By Masakazu Katsura

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Video Girl Ai Vol. 3

By Masakazu Katsura

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Video Girl Ai Vol. 5

By Masakazu Katsura

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Video Girl Ai Vol. 6

By Masakazu Katsura

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Ai is back in the real world and living at Yota's house due to a kindly old clerk of the Gokuraku Video Shop who dubbed her take. Now her creator has decided to erase her and sends a video-girl ass...

Shadow Lady

By H. Kotobuki, Masakazu Katsura, T. Smith

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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.