クラスメイト最弱の魔法使い

From Author Wars - https://authorwars.com/books/kurasumeitozui-ruo-nomo-fa-shi-i-3038540.html

Overview:

Title: クラスメイト最弱の魔法使い
Author: 大崎アイル
Year: 2019
Type: Novels
Series: 信者ゼロの女神サマと始める異世界攻略 / Full Clearing Another World Under a Goddess with Zero Believers
Number in Series: 1

Variant Titles:

2021. The Weakest Mage in Class