'Guro' is known for extreme depictions of violence and gore. Originated in Japan, it often involves violent butchery, mutilation and all combinations of store an undead, and were originally meant to expiate the public fear.
Many aspects of life that are not usually spoken about in polite company can be found where Guro creates this condition for readership, often so that those who appreciate extreme violence and depiction of manners usually hidden from public view together with pornographic narratives (when they are also couched in graphic terms) would feel free because the public is freedom.
Originally, the term mainly appears in underground or adult works, but hints of "Guro" can also be seen in the mainstream manga and anime "Elfen Lied."Be that as it may, the 'Guro' is not for all people. Some arguments have also been made that guro is unacceptable with the uninitiated.