Okiraku Ryoushu no Tanoshii Ryouchi Bouei ~Seisan-kei Majutsu de Na mo na Kimura wo Saikyou no Jousai Toshi ni~ (Novel)

From Seven Seas: Van, fourth son of a marquis, is just a toddler when he realizes he’s been reincarnated. Thanks to his literal lifetime of knowledge, he is raised as a child prodigy. Until his production magic manifests, and it’s the last thing his snooty mage family wants to see! His disappointed father banishes him to a podunk town on the verge of collapse, yet Van can only see the place’s potential. Can our hero’s bastion of battlements build a better life than battle magic ever could?