冬山の隠れ鬼

From Author Wars - https://authorwars.com/books/dong-shan-noyin-regui-3179322.html

Overview:

Title: 冬山の隠れ鬼
Author: 歌峰由子
Year: 2021
Type: Novels
Series: 陰陽師と天狗眼 / Onmyoji and Tengu Eyes
Number in Series: 2

Variant Titles:

2023. Hide and Seek in the Wintry Mountains