The Dark Mage's Return to Enlistment

After enduring unimaginable hardships and saving an alternate world using dark magic, Minjun walked away from all his wealth and glory as a hero, desperate for a peaceful return to Earth. However, his dreams of a quiet life are shattered almost immediately when a catastrophic dungeon break unleashes a horde of monsters, threatening the very comfort he fought so hard to achieve. With his hard-earned retirement cut agonizingly short, Minjun is left with no choice but to face an unexpected fate—enlisting in the military on the very next day.