Makai Kingdom is the story of Overlord Zetta, who accidentally destroys his own Netherworld. In order to save himself, he seals his soul inside a book. Reduced to nothing more than a tome, Zetta is forced to enlist the help of his fellow Overlords to get his netherworld (and his body) back.
Higurashi When They Cry is a sound novel. The music, backgrounds and characters work together to create a world that is the stage of a novel for the user to read. They laugh and cry and get angry. The user takes the point of view of the protagonist to experience the story.