Check the S1 (No. 1 Style) Official Website (Age Restricted) for technical specifications and release dates.

If a file labeled “4K” is smaller than 5 GB, it is almost certainly a fake upscale (a 1080p file stretched to 4K), which will look worse than the original 1080p due to blurring.

It does not mean the content of the video has changed (new scenes, angles, or endings). The plot and runtime (approx. 120-150 minutes) remain identical to the 2022 original.

Many 4K updates are released exclusively through digital VOD (Video On Demand) platforms rather than physical media, making them easier to access globally. Technical Specifications Format: Digital Download / VOD Resolution: 3840 x 2160 (4K UHD) Starring: Yua Mikami Studio: S1 (No.1 Style)