Horror Anime

This series is a short series which I found on Crunchyroll; only 13 episodes. I do believe the story concept is very unique. The whole story is based within the dream world where some dreams are able to affect the real world. A man who is able to enter other peoples' dreams takes it upon himself, with the help of another person, to stop the world from becoming apocalyptic. The dreams that the man enters are linked to a god who is trying to destroy the world. I thought the sto