Fighting Game concept: Female Shoto duo (sketch)

Premise: I've started developing my personal Fighting Game Original Characters (that was soon changed in an "All female" Fighting Game after some suggestions) based on the following archetypes bluerelativity.deviantart.com/… enhanced with some pretty costructive discussions that were born when I posted the same topic on FIGHTING-GAME-FANS

Here are the main characters of the game, or should I say the Main Character and her Palette Swap. Once again, just an EXTREMELY quick sketch, that should hopefully highlight their main features anyway.
(Note: since they're still nameless, from now on we'll refer to them respectively with "Blue" and "Crimson")
They represent the focus of the story, the backbone of the game together with the main boss, and move-wise, they represent the all-rounders, the "shoto" of the game, the most basic characters around which all the others are built.
Now, Shotokan variants wouldn't be so if they didn't have a shoryuken, or a projectile attack of some sort. But I'll tell you one, I hate when characters set in extremely realistic games (in terms of design) start shooting balls of fire and light. I hate the "there's not a plausible reason because he should be shooting those things from his hands if not magic or supernatural/spiritual reasons" factor. I just want everything to be explained, justified, to have a scientific reason behind, maybe even resulting in science fiction, but at least PLAUSIBLE.
The "Shoryuken dilemma" actually played a big part in my story writing. You'll understand why. Now, on with the story:

In a dystopical, post-war, not so remote future, females are the only individuals to run freely around the world, while the few males last are grown in cages like beasts just for reproduction matters. But not all females are free.
"Blue" and "Crimson" have been slaves for their entire life, forced like post-modern gladiators to beat to death their own kind in bloody arenas, armed with mechanical gauntlets able to shoot fire at medium distance, to make fights more spectacular and gruesome for their owners.
With great effort, they eventually manage to escape from the prison (bringing their gauntlets with them of course) and finally be able to see the sunlight they've never seen before. They discover that there's no trace of sunlight, but also an even more terrible thing: they're just inside a bigger prison.
The Citadel was made to keep out from the rest of the world the most dangerous individuals (Escape from New York ftw), being de facto an enormous self sufficient little world, from which noone could ever escape.
"Blue" and "Crimson" understand their fight is just begun. Luckily, they can count on their fighting and survival skills, as well as their gauntlets, being the only ones owning a pair in the entire Citadel. Or at least, they think so... (continues)