Description: In Europe at the end of the fifteenth century, the Dark Ages were coming to an end. A young theological monk Nicholas, as a devout Dominican, held unique views on heresy and was eager to find a way to reconcile and accept paganism, so he embarked on a journey to find the ancient manuscript "Hemel Document". This is the background of Keiichi Hirano's first novel "Eclipse". In Japan in the 1990s, the bubble economy reached its peak and then collapsed, entering the "Lost Thirty Years". Not only did natural disasters devastate the city, but terrorist attacks also caused panic among the people. Japanese society was filled with a sense of despair and doom.