Marie Kondo es la fundadora del muy elogiado método KonMari y autora de los libros La magia del orden, número 1 en la lista de bestsellers del New York Times, y La felicidad después del orden. Traducida a treinta y cinco idiomas y con más de seis millones de ejemplares vendidos en todo el mundo, ha dado origen a una serie de Netflix. Su famosa empresa de consultoría con sede en Tokio ayuda a los clientes que recurren a ella a transformar sus hogares desordenados en espacios para la serenidad y la inspiración. Actualmente vive en Tokio con su marido y su hija.
 
Salina Yoon es la autora/ilustradora de una docena de álbumes ilustrados para niños y de casi 200 libros para jóvenes lectores. Ha sido galardonada con el Premio Geisel. Salina vive en California con su esposo y sus dos hijos.
 
Marie Kondo is a tidying expert, bestselling author, star of Netflix's hit show Tidying Up with Marie Kondo, and founder of KonMari Media, Inc. Enchanted with organizing since her childhood, Marie began her career as a tidying consultant while a 19-year-old university student in Tokyo. Today, she's a world-renowned tidying expert and pop culture icon, helping people around the world to transform their cluttered homes into spaces of serenity and inspiration. Marie has been featured in Time Magazine, the New York Times, the Wall Street Journal, The London Times, Vogue magazine, The Late Show with Stephen Colbert, The Ellen Show, and many others. She has also been named one of Time Magazine's 100 Most Influential People in the World.
 
Salina Yoon is a Geisel Honor-winning author/illustrator of a dozen picture books and early readers, and nearly 200 innovative novelty books for young readers. Her Penguin and Bear and Floppy picture book series have been featured in Kohl's Cares and have sold around the world. She lives in San Marcos, California, with her husband, Chris Polentz, and their two sons.