後宮の烏4

From Author Wars - https://authorwars.com/books/hou-gong-nowu-4-3241316.html

Overview:

Title: 後宮の烏4
Author: 白川紺子
Year: 2020
Type: Novels
Series: 後宮の烏
Number in Series: 4

Variant Titles:

2023. Raven of the Inner Palace 4