七つの魔剣が支配するIV

From Author Wars - https://authorwars.com/books/qi-tsunomo-jian-gazhi-pei-suruiv-2979667.html

Overview:

Title: 七つの魔剣が支配するIV
Author: 宇野朴人
Year: 2019
Type: Novels
Series: 七つの魔剣が支配する / Reign of the Seven Spellblades
Number in Series: 4

Variant Titles:

2021. Reign of the Seven Spellblades IV

Genres/Themes:

young-adult fantasy