The natural scenery on the island is stunning. You can see the ancient Yakusugi cedar forests over 1,000 meters above sea level. There's also a unique mixed-gender hot spring in the sea at Hirauchi, but I was too shy to try it.
We drove up to the 5th station parking lot and started climbing. The trail is well maintained and easy to walk. We stayed overnight at a mountain hut on the 8th station, then woke up early to reach the 3,776-meter summit for sunrise. It was a wonderful and rare experience.