Adventures of Ugo

History
The Adventures of Ugo is a book written by William Minerva with a hidden message on its ex libris. Upon closer inspection, Emma discovers that "The Adventures of Ugo," has the morse code for 'promise.' The book itself contains subtle parallels to the real world that are meant to serve as warnings for the children. Minerva donated a copy of the book Grace Field House and several other farms in hopes the children there will pick up on its underlying messages.

This book tells the story of a young man named Ugo and his lemur friend, Marvine, who have adventures in an fantasy-like world parallel to what the orphans experienced during their escape from Grace Field House in the Demon World. William Minerva intended for the escaped children to use the book as a guide book on how to avoid the hazards outside Grace Field House and how to survive in the Demon World.

The Adventures of Ugo uses analogies to explain the bizarre flora and fauna in the Demon World to the children reading the book, whist avoiding suspicion from the workers at the Premium Farms. The book uses the Snakes of Alvar Pena as an analogy for the Bloodsucker Trees. It also makes references to the Anemone Plants and Jewel Flowers found the the Demon Forest.

The book also hints at how to find the pen cap for the Promised Pen. During a pre-recorded phone call from Minerva inside the floating cabin which contains the elevator at Goldy Pond, he told the escapees that he left "the rest of the details" in "Marvine's bed". In the book, Marvine sleeps inside of a desk drawer, alluding that the pen cap was hidden in a nearby desk drawer.

Trivia

 * If you rearrange the spelling of "Marvine", you get "Minerva".
 * Yugo's name is a reference to the book's main character, Ugo, as Shirai originally planned for Yugo and his team to escape from Glory Bell using the book.