野生のラスボスが現れた！

From Author Wars - https://authorwars.com/books/ye-sheng-norasubosugaxian-reta-2753130.html

Overview:

Title: 野生のラスボスが現れた！
Author: 炎頭
Year: 2016
Type: Novels
Series: 野生のラスボスが現れた！ / A Wild Last Boss Appeared!
Number in Series: 1

Variant Titles:

2020. A Wild Last Boss Appeared! 1