Spiral Clicker 2

It has been 200 years since the protagonist of Spiral Clicker first met Helen, and inadvertently brought mana into the world. The further they pushed their conquest of the world, and the other kingdoms located in demiplanes separated from the Earth, the more mana would spread. Saturating the world, and before long, allowing anybody to use magic if they put in the effort to learn.

They naturally rose to be a hero and ruler over all humanity. A position they held for well over a century before retiring to enjoy a their final years with their favorite harem girls. Mana had given humans an extended lifespan; though not eternal.

In the 50 years since, the supply of mana had begun to dwindle. It was unnoticeable at first, but as decades passed, dense population centers noticed the mana supply thinning within the city borders. By now, it has reached the point where discovering a location with untapped ambient mana would make a person rich.

Gifted, though you are, the reality of the situation does not escape you. It seems doubtful you will get to continue to live as a mage... At least... Until you find a mysterious woman in your bedroom one day...