All Korean words used in this book have been transliterated according to the Revised Romanization of Korean system.

Copyright © 2021 by Graci Kim

Introduction copyright © 2021 by Rick Riordan

All rights reserved. Published by Disney • Hyperion, an imprint of Buena Vista Books, Inc. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher. For information address Disney • Hyperion, 77 West 66th Street, New York, New York 10023.

First Edition, May 2021

Stock images: watercolor 61613686, sun 89398255, moon 1471622636/Shutterstock

Designed by Joann Hill

Cover artwork © 2021 by Vivienne To

Cover design by Joann Hill

ISBN 978-1-368-06128-5

LCCN 2020027527 (ebook)

LC ebook record available at https://lccn.loc.gov/2020027527

Follow @ReadRiordan

Visit www.DisneyBooks.com