"The Keeper of the Dungeon surrenders himself to laziness - he does not want to work at all! Arc 15: Encounter of the Underground Heart" is an exciting adventure in a fantasy world, where the main character Leni finds herself in the middle of a huge dungeon full of mysteries and dangers. The book reveals to the reader incredibly picturesque locations, selective humor of the characters and sophisticated gameplay. In this part of the "Arc 15" series, Leni meets the Dungeon Hearts - mysterious creatures that possess great magic and power. Will he be able to prevent new threats and find a way out of this difficult situation? Find out by turning the pages of this exciting book!