4k — Ssis-816

The theme of the release is a "Fan Thanksgiving Day," a common trope in the Japanese industry used for large-scale celebration videos. The "4K" designation refers to the high-bitrate Ultra HD version, which offers significantly higher clarity, better color reproduction, and more detail than standard 1080p Blu-ray or DVD releases.

Known for her frequent appearances in high-budget S1 features.

Available in standard and upgraded 4K Ultra HD formats Runtime: 240 minutes (4 hours) The Superstar Cast SSIS-816 4K

One of the most famous figures in the industry, who often serves as the center for major S1 anniversary events.

As an "orgy" themed production, the video focuses on massive group scenarios involving the entire superstar cast simultaneously. Because S1 is a premium "prestige" label, the cinematography in the 4K version is designed to showcase high-end lighting and production design that justifies the extended 4-hour runtime. Reception and Availability The theme of the release is a "Fan

The cast also features prominent names like Unpai , Konan Koyoi , Yume Nikaidou , Miru Sakamichi , and Ria Yamate . Content and 4K Presentation

The production is notable for its massive scale and length, running for approximately . It was directed by Tiger Kosakai and Innabar , two veterans known for handling large-ensemble Japanese adult media. Studio: S1 (No. 1 Style) Release Date: July 25, 2023 (Japan) Available in standard and upgraded 4K Ultra HD

The primary draw of SSIS-816 is its "super rare" ensemble cast. It features a lineup of "Superstar" actresses who rarely appear in the same production together. According to the TMDB profile for SSIS-816 , the top-billed cast includes:

SSIS-816 is considered a landmark release for S1 due to the sheer number of "S-tier" performers involved. While initially released for the Japanese market in mid-2023, the 4K version has gained significant traction on international digital platforms and specialized adult databases like The Movie Database (TMDB).