Sensei wa Dummy

After Yunogi-san's grandmother passed away, he sold the farm and his possessions and went to Tokyo. But the 34 year old Yunogi-san soon discovers that his lack of experience will not get him a job. He was thrilled to get a call one day about a position. After being forced into the position, he learns he is to become the publicly viewed substitute for horror writer Kirino Shuusuke. (Source: mangatraders)