I started as an elf, but all these University people are insufferable. Is there a way to join Saito, and do I have to restart as a human to do it?

The dwarves have a monoethnic dwarven city. The Orks have a monoethnic Orkish city. The elves have several monoethnic elven cities.
But Saito wants a place where only humans can live, and suddenly he's the bad guy.