magic maker isekai mahou no tsukurikata
マジック・メイカー マジックメイカー マジック・メイカー_~異世界魔法の作り方~ マジック・メイカー_-異世界魔法の作り方-
An isekai fantasy web novel by Kaburagi Kazuki (鏑木カヅキ X Account) with illustrations by kururi in the light novel version. There's also a manga adaption drawn by Nishioka Tomozou, as well as an anime adaption that aired in 2025.