Moribito II: Guardian of the Darkness is the second book in the Moribito series, a series of fantasy novels by Japanese author Nahoko Uehashi. It was written in 1999 and published by Kaisei-Sha Publishing Co., Ltd. in hardcover format and by Shinchosha in bunkoban format. The English translation was published in 2009 by Arthur A. Levine Books, an imprint of Scholastic. The novel follows the main character of the first book, Balsa, as she returns to her home country following the events of Moribito: Guardian of the Spirit. The title refers to the mysterious spirits known as hyohlu who play a large role in the book.