William James Moriarty, the second son of the Moriarty household, is a young mathematics professor who has displayed great cunning and intellect since he was a child. Along with his brothers Albert and Louis, he lives the simple life of a noble.
Outside of school, William is a well-known private consultant willing to solve the problems of anyone in need.
However, his gentle demeanor belies his position as the head of a group prepared to wreak havoc in pursuit of its desire—a new world built from the ashes of the old.
Yuukoku no Moriarty puts a new spin on Arthur Conan Doyle's original work by putting the spotlight on its main antagonist and exploring how he came to be the first and only "criminal consultant."
