"I know this. After the Arcadia Siege War, the Burgundy Family moved to Wilundell. To erase all traces of Derainore, and to sever the hopes of those loyal to the Old Era, the Anjou Family gradually demolished the former palace over the following century."
Shade answered, and Wei Ge nodded lightly:
"Yes, but some traces remained after all. Oakham Park is actually part of the old royal gardens, and that section belongs to city hall. White Cliff Manor, where Margaret plans to stay after arriving, is the only remaining part of the palace's main structure. That manor is now private property of the Anjou Family.
"Besides those two places, one Star-Gazing Tower from the old palace has also survived. It was built by some king of a past generation who liked watching the stars."
Wei Ge said this, and Shade considered the locations of the park and White Cliff Manor before looking for a tower-shaped building nearby.
"You don't mean the tower behind the Seer Association, do you?"
"Yes. The tower was later sold to the Seer Association for stargazing and divination. That tower appeared in the love Tragedy connected to this Heart of Sera—it was where the man and woman in the story first met. Since you mentioned Alchemy, stargazing, and Theurgy, it is the only place I can think of.
"Besides that tower, another important location in the story was the local church. But Mother would not have hidden Younger Sister in a church, would she? The man and woman in that story often happened to meet during services."
Shade did not believe that female Alchemist possessed that sort of ability either, so the answer was most likely inside the Seer Association's Star-Gazing Tower. The problem was that the tower was not the local Seer Association's main building,