You're in a tent eating beans because you're trying to climb a mountain! When you climb, you sleep in a tent and eat only beans (the ultimate climbing food).
You climb and climb and climb until you finally reach... とうきょう! At the top of this mountain you've been climbing you can see all of とうきょう. It's beautiful! It's breathtaking! All your climbing makes this view of とうきょう even more worthwhile!