Leura

Leura is the Saint of the Sun and the previous head of the All Heavens Temple.

History
Leura was once a powerful warrior, capable of destroying an enemy castle with heat rays from the sky. She went missing a month before the beginning of the series.

Illusion Fog Barrier Arc
Leura was captured by Dozzu's faction to use her heat power. They forced her to raise the temperature of the area before the Braves arrived, and killed her when Adlet reached the temple. This created fog because of the sudden drop in the temperature, making the Braves think that the barrier was already activated when it was actually activated by Nashetania, who is working with Dozzu, when she broke the slate.