Orcsen Oukokushi - Yaban na Ooku no Kuni wa, Ikanishite Heiwa na Elf no Kuni wo Yakiharau ni Itatta ka

"Gone are the days of swordsmanship and chivalry. Now is the age of gunpowder and war. Our tale involves two key players. The first is Orcsen, a unified nation comprising various demonic races, governed by the oft-reviled orcs. The second is Elfind, a kingdom ruled by the beautiful yet vain elves. Dineru, the chieftain of the dark elves, has been compelled to flee her homeland due to betrayal by former allies. Amidst this forced exodus, she encounters Gustav, the orc king and leader of Orcsen, in what seems to be a fated meeting."