The Dwarf Kingdom was one of the biggest powers in the western continent, and as such, the capital of the Dwarf Kingdom was a place where a lot of people wished to live.
The dwarves had the fame of being experts at blacksmithing, so it wasn't weird seeing different species wandering the streets, but all of them were wealthy people. After all, the dwarves only stopped racial discrimination when the other party had enough power and that included the power of wealth.
However, the only ones wandering the streets without being dwarves were those wealthy, and there wasn't any trace of those who were only strong.
That started to happen after the previous Dwarf King got killed by his eldest son, the first prince in order to steal the crown. The Dwarf King was a Law God, so it was hard that he would have died and passed the throne to his son, so no one doubted that the incident happened due to greed for power.
