She's the Strongest Bride, But I'm Stronger in Night Battles: A Harem Chronicle of Advancing Through Cunning Tactics (Manga) Vol. 5

Albert has his orders--capture Lord Licht and bring the Arcana territory under the Demon King's control. After slipping past the enemy's defenses, he sets his sights on conquering the so-called impregnable fortress. With sharp strategy and modern knowledge, Albert sows discord within enemy ranks, cuts off their supplies, and prepares for all-out war. But that's not all--new weapons, fresh recruits, and a growing circle of capable (and captivating) allies are tipping the balance in his favor. The harem fantasy continues with military intrigue, technological twists, and explosive action in this thrilling fifth volume!