Okiraku Ryoshu No Tanoshi Ryochi Boei Seisan Kei Majutsu De Na Mo Naki Mura Wo Saikyo No Josai Toshi Ni 3 (OVERLAP) [Light Novel]

[Machine Translation] Van, a boy who was expelled from the marquis's house and became the lord of a remote village because of his aptitude for "production magic," which is considered "useless. While he is developing his village using his knowledge of his previous life and production magic, the neighboring kingdom of Yelinetta invades and the fortress city of Skudet falls. In order to recapture the city, the king himself takes command and deploys the most powerful weapons that Van has made to take on the challenge with a complete lineup! However, the Kingdom of Yelinetta is also sending troops to Arte's hometown...?

“役立たず”とされる『生産魔術』適性を理由に、侯爵家を追放され辺境の村の領主となった少年・ヴァン。前世の知識と生産魔術を活用して村を発展させる中、隣国・イェリネッタ王国の侵攻によって、村の近郊の城塞都市スクデットが陥落してしまう。都市を奪還するため、国王自らが指揮を執り、ヴァンお手製の最強の兵器を配備して、万全の布陣で挑む!しかし、イェリネッタ王国はアルテの故郷にも軍を差し向けていて...!?