Touge is not just about drifting. Nore is only run in a run/chase format. Touge is a personal battle between drivers, nothing more. It started in the mountians of Japan when one driver would not allow another to pass. These battles have evolved since then and are run up-hill, down-hill, and roads that do go up and down, on both narrow and wider roads, twisty or more straight. Touge drivers use every style of driving when approate, its all about winning the race, so they drift where drift is faster and grip where grip is faster.
Touge is nothing more then a personal battle between two drivers, nothing more.