The Light from the Darkness

Exploration Stage: Atelier Delamode
From: Angelique
Description: The houses in the fog are empty and dark, but I saw one whose windows glowed red. To confirm that such a house exists and that I was near it, I brought a crimson lamp from its porch. It is around here, find it.
Completed: This lamp continues to emit light, although there is no fire or crystals in it. A crimson fog swirls inside it. I wanted to understand how it works, but Fabien could not explain it, and there is nobody else I can ask.