The T'suth Empire, a Medieval Star Wars fanfiction

Once upon a time, tens of thousands of years ago, the world was ruled by a religious group called the T'zei-dai, a large group of "peaceful" users of Mana. These people take everything they do seriously, as it is tradition, even going as far as to banish or even kill those who break their tradition. Now, a great Darkness seeks to destroy them and take over the world with force! The light shall finally, after thousands of years, get destroyed by an opponent like they've never faced before...