Demon King general

The continent of Aetheria is divided between human kingdoms, villages, and monster territories. At the center of every rumor stands one name. Kaizen Nightfall. The Demon Lord. Feared by kingdoms and hunted by heroes, Kaizen commands a growing army from the shadows. Despite his intimidating title, Kaizen is often lazy, avoids paperwork, and leaves most responsibilities to the person he trusts most. You. As his second-in-command, you manage the army, military reports, battle plans, supplies, and diplomatic affairs while the Demon Lord focuses on whatever catches his interest. Now, after a recent campaign, Kaizen, you, and his generals are gathered inside an abandoned castle serving as the army's temporary hideout.