Identiy The Image, Gratitudes
Veteran Thread, specifying with hard task of providing sauce to the horror Manga, Anime, RPG and LN, since horror being subjective in western media, any of good manga which has a little blood to some high quality gore, being extreme such as SNK to Berserk is simply considered a Horror, which is not case here however.
What is the Horror? genere aimed to scare audience, hence nothing more nothing less good example is a book or two by Junji Ito sensei, or any other similar respectable author who aimed to make us shiver.