I have climbed Mount Fuji overnight with the idea of watching the sunrise from the summit. This was a lifetime experience for me, and I would recommend it to everybody.
What Equipment Do You Need to Climb Mount Fuji?
Mount Fuji is a very high volcano and this implies a harsh terrain, but this is just a walk up and not a technical climb. I have climbed it myself some time ago, so here you have my first-hand experience and recommendations.