The S1 No. 1 Style website lists the full technical specifications and official gallery. DMM/Fanza:

Before proceeding, it is important to clarify that is a catalog number associated with the Japanese adult video (AV) industry, featuring the renowned former actress Yua Mikami . The trailing characters “02-30-49 Min” do not correspond to any standard timestamp, title, or official metadata for this release. It is likely a typo, a corrupted filename, or a personal note from a media player (e.g., a timestamp marker at 2 hours, 30 minutes, and 49 seconds).

Because Mikami remains a relevant fashion icon and YouTuber, new fans are constantly discovering her past work, keeping the search volume for her classic IDs high. Conclusion

A sequential catalog number used by distributors to maintain organized digital libraries. Numbering systems ensure that intellectual property remains distinct across streaming networks and physical media formats.

For the curious researcher or the collector, the important takeaway is this: is a genuine cultural artifact from Yua Mikami’s golden era. The “02-30-49 Min” is a ghost—a user’s digital bookmark, not a canonical part of the work.

The 150-minute runtime is devoted to exploring this dynamic, with Yua showcasing a range of emotions—from playful teasing to aggressive demands, and from intimate whispers to full-throttle passion. The "20 hours" premise allows the narrative to evolve, depicting the physical and emotional toll on both participants, a departure from shorter, more formulaic scenes.

Before her rise to international fame in the adult video industry, Mikami was known as Momona Kizaki during her tenure with the idol group . After graduating from the group in 2014, as documented on Wikipedia , she rebranded herself and debuted in the AV industry in 2015. Her transition was marked by immediate success, largely due to her established fanbase and high production quality. Understanding SSIS-777

Yua Mikami officially retired from the AV industry in August 2023. Since her retirement, there has been a surge in fans looking for her "hall of fame" performances, with SSIS-777 being at the top of that list.

Mikami first entered the public eye as a member of the renowned idol group SKE48, a sister group of AKB48. After graduating from the group in 2014, she made a pivotal decision in 2015 to begin a new chapter in the adult entertainment industry, quickly becoming a leading figure for her charismatic presence and captivating performances.