Okiraku Ryoushu No | Tanoshii Ryouchi Bouei Raw [top]

(translated as Easygoing Territory Defense by the Optimistic Lord: Production Magic Turns a Nameless Village into the Strongest Fortified City ) is a popular isekai series that follows the story of Van, a man reincarnated into the body of an aristocratic child in a world where offensive elemental magic is everything. Core Story Premise

Since you used the term "raw," I assume you may be looking for the original Japanese source material, a summary of the plot to see if it is worth reading, or an analysis of the story. Below is a comprehensive paper covering the series' overview, plot, characters, and themes. okiraku ryoushu no tanoshii ryouchi bouei raw