20 years ago, the hero and their party has successfully vanquished the demon lord ending its millennium long reign. After that however, the hero just vanished, leaving the words: "My time in this world is great, oh how I'll miss this, my adventure however is ending and its up for the humanity as a whole to regain its lost lands. I scattered it there... the demon lord's treasure! Build kingdoms and empires if you will, explore the thousand year forgotten land, the humanity shall be great again!" and thus, the Adventurer's golden age has begun!!

Notice: This novel was made with ai assistance, I just provided rough outline and the AI generated the rest on its own, because of that, I decided to make this novel a public domain, happy reading everyone!