Who is Fencer Vargas, and where is he from?

Twenty bits for five male cores

fifty bits for ten cores

Why is it that male and female cores are worth the same amount but they wand twice as many female cores before delivering payment?

I like your story dude but you could use an editor

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If you look at the numbers, male cores are 4 bits each, and females are 5 each. This may be due to differences in attack/defence capabilities between sexes, or something else completely. 1 bit discrepancy makes quite the difference as the number go up.
20/5 = 4
50/10 = 5
This could also be a combo thing where you earn a bonus for certain milestones of cores?

You need a proofreader and an editor. The story is good but several words are just straight up wrong, like when Twilight said she wanted Vargas asserted, you meant to say arrested. Then there are parts were it is unclear what characters are performing what actions, like when Trixie ran up to hug Vargas and Gilda, it was pretty unclear that it was Trixie until Vargas called her name.