Isekai wa Neko to Tomo ni: Nekozuki SE ga Program Chishiki x Mahougu de Saikyou Ryouchi wo Tsukuru made

System engineer Yu Matsumoto and his pet cat, Orihime, are transported to another world. There, he meets Annemarie, a poor noblewoman, and together they aim to rebuild her territory... Using his programming knowledge and skills, he works to restore the land! What's more, Orihime has also gained incredible power—!? The fantasy of a system engineer who loves development and revolutionizing his territory begins now!

(Source: Earth Star Entertainment, translated)