>Do they? We probably know, right?
> You don't know. You never asked.
>Do we actually have an income now these days? Or do we just bum free meals off Mysty because we're friends?
> This was a major issue about humans and youkai coming together. Youkai tended to trade in favors. Humans tended to trade in items of currency they had.
> Eventually, Yukari came up with an idea, and, over several days, twisted multiple boundaries to create Gensokyo's new currency: The Yukarin.
> What is special about the Yukarin is that it is technically non-physical. Everyone has a coin with Yukari's face on. This coin works akin to a credit card, however, it accrues value according to your actions. Doing stuff will generally make the value rise, it doesn't seem to care if it's good or bad stuff. There's also sorts of other things the Yukarin does, such as calculate the worth of an item to a person for item-to-item trades to make it fair, and value of favors too.
> The coin can't be stolen, it can gap back to it's owner at their whim. Even fairies use the Yukarin, since the boundary of understanding has been trifled with enough to make even fairies understand it.
> When you last checked you had about 5,000 Yukarins. You guess the amount changed after helping Remilia.
> Of course, some people are suspicious of the Yukarin, and think Yukari is always watching through the coins. These are a minority, especially after several of Gensokyo's brightest, such as the Kappa, and several magicians, checked and confirmed this is not the case.
> It is worth noting that due to being in charge of the biggest food outlet in Gensokyo, and having a massive horde of shiny stuff from before the Yukarin, that Mystcia is actually Gensokyo's richest person. Not that she cares much about material value, she just likes shiny stuff, and frequently trades for various shiny objects that wind up at Rinnosuke's shop.