
If you could provide more details or clarify the context in which this string was encountered, I'd be more than happy to help further.
SONE-290
Example:
SONE-290 - Secret Summer - Miru Sakamichi - 1080p.mp4
SONE-290.srt
Given the information and possible interpretations, here is a structured write-up:
Today / Updated: These are "freshness" markers. Uploaders use these terms to signal to search engine algorithms that the post is recent or has been recently verified.