マジック・ツリーハウス

Magic Tree House is a children's book series created by American author Mary Pope Osborne, which follows the adventures of siblings Jack and Annie as they travel through time using a magical treehouse. The series is divided into two main parts: the first part (books 1-39) focuses on the siblings accepting missions from the sorceress Morgan le Fay, while the second part (beginning with "Christmas in Camelot") called "Merlin Missions" sees them on quests given by the wizard Merlin. These books are typically longer, and some stories are set in fantasy realms such as Camelot. There is also a non-fiction companion series called "Magic Tree House Fact Trackers," providing background information for the fictional stories. The series has been adapted into various formats, including an animated film, a musical, and children's plays. Beloved by children worldwide, Magic Tree House is known for its engaging storytelling and educational value, and has been translated into numerous languages.