千年の都

From Author Wars - https://authorwars.com/books/qian-nian-nodu-3252441.html

Overview:

Title: 千年の都
Author: 七野りく
Year: 2021
Type: Novels
Series: 公女殿下の家庭教師 / Private Tutor to the Duke's Daughter
Number in Series: 10

Variant Titles:

2023. The Millennial Capital