This is the one I wanted to do most of all in my two years living in Japan. Took the West entrance of the tunnel and followed the river until we crossed a bridge. This was when the incline started. We walked up approximately 1km which took us onto a ridge. This part of the ridge was 1 km long to the bottom of Misen (1895 m). The path from Misen To Hakkyo-ga-take was 20 minutes which decreased before going up the other side to the top. A quick lunch break and retraced our steps.