Osamu Koshigaya Books

Kono heya de kimi to

By Kei Tokunaga, En Mikami, Tsukasa Sakaki, Osamu Koshigaya, Kei Nitadori, Chisa Asukai, Toriko Yoshikawa, Ryo Asai

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Hidamari no kanojo

By Osamu Koshigaya

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Xiang yang chu de ta

By Osamu Koshigaya

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"「這真的是當年那個全年級最笨的真緖嗎？」浩介睜大眼睛看著眼前這位美麗的職場女強人，不敢相信竟然就是國中時曾經飽受欺凌的同班同學！浩介還因為替她打抱不平，連累自己也經歷了苦悶的中學時代。暌違十年的重逢，彼此之間的情愫也開始急速升溫。浩介藉著工作之便大膽追求，沒想到這段戀情卻遭到真緖的養父母堅決反對！浩介雖然心存顧慮，兩人還是不顧一切地私奔了。新婚生活有如童話般完美，但是不可違抗的命運卻悄悄威...

Hidamari no kanojo

By Osamu Koshigaya

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Mahotsukai to fukutencho

By Osamu Koshigaya

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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.