Ryoma Kitada Books

SUPER HXEROS Vol. 1

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The hilarious manga series about heroes powered by horniness that inspired the new anime! When the alien Kiseichuu descend on Earth, they have one goal: eradicate the human race. They do so by fee...

I LIKE A GIRL WHO TAKES CHARGE. WAIT, NOT LIKE THAT!When the HXEROS gang goes to take down a Kiseichuu, Retto ends up cornered by two new superhero girls! Now Moena and Shiko from the Tokyo Squad w...

Super HxEros T02

By Ryoma Kitada

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Super HxEros T03

By Ryoma Kitada

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Super HxEros T04

By Ryoma Kitada

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Super HxEros T05

By Ryoma Kitada

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SUPER HXEROS Vol. 7

By Ryoma Kitada

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SHE’S A KILLER QUEEN…It’s all hands on deck for a confrontation with the Kiseichuu Queen! Just as the HXEROS squad is about to deliver the finishing blow, a mysterious black HXER...

SUPER HXEROS Vol. 8

By Ryoma Kitada

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THE NAKED HEAVENS TECHNIQUERetto and the gang arrive in sunny Okinawa, where the whole class is due to enjoy some beachside fun. But there’s no rest for the Super HXEROS, who are soon attacke...

SUPER HXEROS Vol. 9

By Ryoma Kitada

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HXEROS IN PERILWhile Retto and Kirira are off on their school trip to sunny Okinawa, the Saitama HXEROS branch comes under attack by a horde of Kiseichuu! Thanks to the help of a mysterious girl wi...

SUPER HXEROS Vol. 10

By Ryoma Kitada

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THE ULTIMATE MATING PAIRThe Kiseichuu Queen offers a stunning bargain: If Retto and Kirara agree to “mate” with one another, and regularly provide the Kiseichuu with H-Energy, she&rsquo...

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.