Agent Maria from Crimson Comics.

So, technically this character never appears in any of Crimson Sensei’s works—so you might be wondering where she comes from.
There’s actually a series of live-action films inspired by some of Crimson Sensei’s works, such as Crimson Dreams and Crimson Girls. This live-action series is called Crimson Collab (at least, I believe that’s the name).

From this series, there are two original characters: the first is Agent Maria, and the second is Anri Okita, who is a real actress. The thing is, both of them only appear as a single illustration placed on the back of the poster, alongside some low-quality screenshots from the film.

Because of that, I did a bit of editing work to see if I could create a usable LoRA—and this is the result.
The only issue I’ve noticed is that it tends to generate a lot of belts, so I recommend adding belt to the negative prompt to avoid getting too many of them.

Let me know what you think of the result!