Isekai Kokka Alchimaira: Saijaku no Ou to Musou no Gunzei

Helian, the top player at the kingdom-management VR game called "Tactics Chronicles," was transported into the game world itself.
There he encountered a large army of demons running loose. And then there were the former NPCs, who have become the one-hundred-strong warlords. Helian hid his identity and set out on a quest with his vassals, on...