The ChÅ `` bu region isa large area of HonshÅ `` . It can be divided into three different regions : TÅ kai , KÅ shin ` etsu , and Hokuriku . The ChÅ `` bu region covers a large and geographically diverse area of HonshÅ `` which leads to it generally being divided into three distinct subregions : TÅ kai , KÅ shin ` etsu , and Hokuriku .