Give me an Ultra Beam!

There was a steep greyish-white mountain around five kilometers to the west of Rodu. The area annually produced vast quantities of rocks to be used as construction materials, and it was said that the mighty city walls of Rodu were raised with rocks excavated from this area.

There was also another legend surrounding this lone mountain. It was said that when the royal craftsmen first attempted to excavate this mountain, the mountain suddenly became extraordinarily hard, making it impossible to break even with the finest of metal tools.

This incident had alerted the king of the Roth Empire at the time, and he issued an order for the mountain to be exempt from excavation, which was how it received its name of "Exemption Mountain".

Due to the fact that the terrain over the mountain was very steep and smooth, there were almost no land-dwelling beasts to be found there—nor many flying beasts, for that matter.