Real - S1.E4

Azuma is a surgeon who is plagued by headaches, which are affecting his work. Despite the fact that his friend and colleague, Nagai, attacked Azuma and injured his wrist, he takes the man's advice and seeks help from an underground healer. This man gives Azuma a drug which causes him to begin having very vivid and disturbing visions. Are these hallucinations or is he beginning to see the world for what it really is?