Last Boss, Wants to Try Retiring ~I’ll Pretend to be Defeated by the Heroine and Try to Live Freely~

The emperor of the Noah Empire who commands ten thousand mamono— — The Demon Emperor Menace. Feared throughout the world, he one day learns he is [The last boss of an RPG].

Menace believes continuing as he is won’t end well and decides to stop being the last boss. In an event at the beginning of the game, he “pretends” to be defeated by the heroine Alec and then secretly sneaks out to go on a journey.

However, having hidden himself away in his castle (The Last Dungeon) that entire time, the common sense of the last boss is lacking. Furthermore, the level of the outside world is lower than expected— —

This… is a runaway last boss, one who is living freely while greatly destroying the story.