Likely an MP4 or MKV container based on the size-to-duration ratio typical for high-definition (HD) web rips.
In Japan, producing or distributing uncensored adult content is illegal. Files labeled as "Uncensored" are typically leaked versions, "decensored" via AI, or produced by overseas entities targeting the Japanese market.
The string you provided appears to be a metadata title for a digital file, specifically a Japanese adult video (AV) featuring a performer named (美咲しずか).
"U15" (Under 15). This is a marketing tag used in certain niche markets, though often used for performers who are legally adults but possess a "juvenile" or "petite" aesthetic. 💾 Technical Specifications File Size: 1.14 GB.
If you are attempting to access or download this file, exercise extreme caution: