Kylian Astier is a Breton found with his companion Mihra af-Abadiran at their campsite at one of their possible locations in Deshaan. The Vestige can light their fire as part of the Lightbringer achievement.
Upon encountering them:
Kylian Astier: "Rub the sticks together, then build a tinder fort. Wait, or was it ...."
Mihra af-Abadiran: "When you figure it out, write it down so you won't forget the order."
- "I appreciate it." – After lighting their fire
- "Join us if you care to! The fire is blowing strong." – After lighting their fire