This stands for Japanese Adult Video . It is a massive industry in Japan that operates under unique legal and cultural frameworks, often characterized by its own distinct tropes and production styles.

Could also be a — some JAV studios release “Best of Pregnant” compilations with codes like NHDT-xxx , JUKD-xxx . No match.

The presence of “JAV” (Japanese Adult Video), “HIBC-02” (a format consistent with adult video catalog codes), and “Pregnant” suggests this is not a mainstream Japanese drama series, but rather a file name or label for adult content. “Sasvans” appears to be a typo or nonsensical word, possibly a miswriting of a name or a garbled tag.