I had to address it once, during a very awkward roleplay session where Berrod learned to be polite about it around his friend. I had no idea at the time how it's handled in Eorzea (and I still don't know really, there's zero mention), but my roleplaying partner and I dealt with it as:
A simple, absorbant and disposable cloth rag that was burned after use. Sort of like a sweat-rag, but...a blood-rag, or a blood-cloth.Â
Psychologically and emotionally individual to the person it's happening to, but with ample parallels to real life (since we had nothing to work on).Â
Our characters assumed that Miqo'te ladies were estrous. As players we had no clue one way or the other, but it was the (mis)conception we gave to our toons.Â
The idea that it affects a Dark Knight/Warrior's state is a very interesting one that I encourage you to toy with! I have a similar thing going with one of Berrod's chakras; depending on how hungry or aroused he is, it works differently.Â
Just be sure to mind your audience, and illustrate things appropriately, methinks. That  counts for all things, not just that. I look forward to hearing about what you've managed to come up with!
A simple, absorbant and disposable cloth rag that was burned after use. Sort of like a sweat-rag, but...a blood-rag, or a blood-cloth.Â
Psychologically and emotionally individual to the person it's happening to, but with ample parallels to real life (since we had nothing to work on).Â
Our characters assumed that Miqo'te ladies were estrous. As players we had no clue one way or the other, but it was the (mis)conception we gave to our toons.Â
The idea that it affects a Dark Knight/Warrior's state is a very interesting one that I encourage you to toy with! I have a similar thing going with one of Berrod's chakras; depending on how hungry or aroused he is, it works differently.Â
Just be sure to mind your audience, and illustrate things appropriately, methinks. That  counts for all things, not just that. I look forward to hearing about what you've managed to come up with!