Kaisa Nord is the unique selling proposition (USP). In the modern adult industry, performers are brands unto themselves. A quick search of public databases suggests Kaisa Nord is known for a specific aesthetic—often described as "girl-next-door" with a edgy twist (e.g., tattoos or alternative hair colors). By placing her name in the title, producers signal to fans of her work that this is a new release in their preferred niche. This is direct-to-fan marketing embedded in a filename.
The specific title you're referencing, "," refers to a performance by Kaisa Nord released on July 3, 2024, as part of the MassageSins series. Overview of the Production

