Native American Heritage Month

Join the Goodreads Author Program

Are you Ryoichi Koga, author of the books below?
Ninin Ga Shinobuden 1 by Ryoichi Koga Ninin Ga Shinobuden by Ryoichi Koga Ninin Ga Shinobuden 2 by Ryoichi Koga Ninin Ga Shinobuden 4 by Ryoichi Koga Genome silver (Megastore Comics) (2012) ISBN by Ryoichi Koga Genome gold (Megastore Comics) (2012) ISBN by Ryoichi Koga


To join the author program as Ryoichi Koga, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


About the Author Program
Authors on Goodreads
Author Guidelines
Author Program How-To
Author & Advertisers Blog
Ask the Author: Featured Authors
About Goodreads