黒曜宮の陰謀

From Author Wars - https://authorwars.com/publications/hei-yao-gong-noyin-mou-562275.html

Overview:

Title: 黒曜宮の陰謀
Author: 栗本薫
Year: 1985
ISBN-10: 4150302014
Publisher: 早川書房
Pages: 281
Binding: Paperback
Type: Novel
Title Reference: 黒曜宮の陰謀
Notes: Data from Amazon.co.jp Title transliterates as "Kokuyoukyuu no Inbou" (Obsidian Castle Intrigue)