緋色姫譚

From Author Wars - https://authorwars.com/books/fei-se-ji-tan-3113502.html

Overview:

Title: 緋色姫譚
Author: 長月達平
Year: 2021
Type: Novels
Series: Re:ゼロから始める異世界生活Ex (Re: ZERO Ex)
Number in Series: 5

Variant Titles:

2022. The Tale of the Scarlet Princess