Also known as: 勘違いの工房主, 勘違いの工房主〜英雄パーティの元雑用係が、実は戦闘以外がSSSランクだったというよくある話〜
An isekai fantasy light novel by Tokino Yousuke (時野洋輔 X Account) with illustrations by Zounose. There's also an manga adaption drawn by Furukawa Naharu, and an anime adaption that began airing in April 2025.