極彩の魔女

From Author Wars - https://authorwars.com/books/ji-cai-nomo-nu-3112778.html

Overview:

Title: 極彩の魔女
Author: 橘公司
Year: 2021
Type: Novels
Series: 王様のプロポーズ / King's Proposal
Number in Series: 1

Variant Titles:

2022. The Witch of Resplendid Color