The protagonist's job is to resell goods. When he was tired from work, he started traveling for the first time... The story begins with his understanding of human nature in various countries and places, the pursuit of lost paths, the task that cannot be given up, the future that cannot be retreated, and the people of various colors around him lead him step by step towards the light point in the fog. In order to see the ultimate goal of his pursuit, he constantly explores unknown dangers and keeps moving towards the final result.