転生したらスライムだった件15

From Author Wars - https://authorwars.com/books/zhuan-sheng-shitarasuraimudatsutajian-15-3113546.html

Overview:

Title: 転生したらスライムだった件15
Author: 伏瀬
Year: 2019
Type: Novels
Series: 転生したらスライムだった件 / That Time I Got Reincarnated As a Slime
Number in Series: 15

Variant Titles:

2022. That Time I Got Reincarnated As a Slime, Vol. 15