Monster Civilization: A Dungeon's War

When a forgotten dungeon awakens with consciousness, it realizes humans see monsters as nothing more than loot. As adventurers repeatedly invade and slaughter its inhabitants, the dungeon begins evolving; not just stronger monsters, but an entire civilization. This time, the dungeon won’t defend itself… it will teach monsters that humanity is the real invader. (Can also be found in Webnovel - https://www.webnovel.com/book/monster-civilization-a-dungeon's-war_35348200800275605)