"I've seen it in some places," Wilson said. "I once came across a peculiar mural technique in a remote village of a place called the 'Epirus Republic' on the southern peninsula. It's said to have been passed down from the ancient civilization period. The local villagers would use a photosensitive paint for their murals; the concealed content of the mural would only appear when illuminated by specific natural light, even firelight won't work. Isn't that strange?"
"Have you ever wondered why this tomb is filled with flammable gas? It's because the designers of the cavernous tomb didn't want those who entered to light any fires."
Ivita realized the key point. "So only light magic can be used... not fire magic. Among the three of us, only you can use light magic."
Wilson nodded. "Yes, Lord."
"Let me give it a try."
He brushed his palm over the mural, a faint glow emanated from his hand. He first touched the bottom left corner of the mural, but didn't find anything.
