Our series consists of two, Legend Riders: Legacy of Leneira (here) and Legend Riders: Rise of Cassandra (will be posted soon), and both have female protagonists. One of us is a guy, the other is a girl, but we have same reasons.
One of the reasons is that we like breaking clichés of emotional, weak female charas. It's rare to see a strong girl even when she's the main, there will always be a "Yeah, but" in their designs and they can never do the job without freaking out, crying, being rescued by Prince Charming or obsessing over a dude. Their backstories always depend on a male, usually the main one they'll end up with at the end of the series.
Secondly, women tend to be underappreciated in cartoons, comic, and manga. They're always a part of the supporting cast that runs after the main dude and have no role other than reminding us what's his name (since she repeats it 50 times per episode). Sad part being, she's usually the strongest, most skilled, talented, smartest, or generally the only one in the group that actually does something, without getting anything from the rest of the charas or even the creator themself. And of course, there are those that are nothing more than fanservice objects without any depth or reason.
Of course, these aren't necessary rules, just something seen a lot. Our thing focuses directly on the female mains and the males largely depend on them, which isn't something seen enough in our humble opinion. We like being weird.