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S1 No. 1 Style
Founded 2004
Headquarters Japan Meguro, Tokyo, Japan
Industry Pornography
Products Pornographic films
Parent Hokuto Corporation

S1 No. 1 Style (エスワン ナンバーワンスタイル ?) or just S1 (エスワン) is a major Japanese producer of adult videos (AV).[1] The company, located in Tokyo's Meguro Ward, was founded in 2004 as one of the many affiliated studios in the giant Hokuto Corporation group.[2] Hokuto distributes the studio's videos via retail sales and online through its DMM website. The Public Relations representative for the studio is Megumi Yamane (山根愛美).[3]


Videos and codes

S1 released its first 11 videos on November 11, 2004 with popular actresses formerly with other studios including Sora Aoi and Alice Ogura. The videos were labeled with the production codes ONED-001 to ONED-011. The company continued using the ONED series of production codes, releasing as many as 30-40 videos per month, until ONED-999 appeared on June 19, 2008 when it switched to a new code series starting with SOE-001. Compilation videos which re-mix previously released material use production codes of the type starting with ONSD-001.[4] In addition, S1 videos intended "for rental only" carry different codes. Original videos are labeled 5ONE-xxx or 5SOE-xxx and compilation videos follow the scheme 5ONS-xxx, where the "xxx" portion corresponds to the 3 digits of the same "for sale" videos.[5]

Popularity and awards

Their combination of top actresses, a thin digital censorship mosaic (girigiri mosaic or ギリギリモザイク), high production values, and a softer "glamour" approach to porn have made S1 into one of the most popular and best-selling brands in Japanese AV. In the 2006 and 2007 AV Open contests based on video sales, the S1 entry took the First Place Award in both years.[6][7][8] The S1 nominated video in the 2008 AV Grand Prix (based on sales and fan votes), won the GrandPrix Stage Highest Award and also the award for Best Package Design as well as the Press Award and the Dealer Award.[6][9] At the 2007 Vegas Night awards, the S1 video Hyper-Risky Mosaic Mihiro won for Best Title and the top 4 places in the Best Actress category were taken by S1 actresses with Akiho Yoshizawa taking 1st Place.[10] The studio also dominated the 2009 AV GrandPrix Awards winning the top GrandPrix Award in addition to taking the DVD Sales Award, the Retailers Award, Best Package Design Award, and the Best Featured Actress Video Award for Double Risky Mosaic, Rio & Yuma.[11]


Since its foundation, the S1 studio has been known for having some of the best known and most popular actresses in Japanese AV:[12]


A selected list of some of the longest-running and most popular of the nearly 100 S1 video series:[13][14]

  • BakoBako Gangbang (バコバコ乱交)
  • Big Magnum Fuck (ビッグマグナムFUCK)
  • Costumes Pakopako! (コスチュームでパコパコ!)
  • Endless Climax! Ultra Ecstasy Fuck (無限絶頂!激イカセFUCK)
  • Hyper-Risky Mosaic (ギリギリモザイク)
  • Let's Have Sex at School (学校でセックスしよっ)
  • Massive Ejaculation on Her Face (ものすごい顔射)
  • My Girlfriend (僕の彼女)
  • Non Stop Incontinence (止まらない失禁)
  • Pakopako Aviation Cabin Attendant (パコパコ航空)
  • Pussy Special (おまんこスペシャル)
  • S1 Girls Collection (S1ガールズコレクション)
  • Sex on the Beach: Southern Island Pakopako! (南の島でパコパコ!)
  • Virtual Special Soapland (妄想的特殊浴場)
  • Wet and Sticky Sex (ネットリ濃厚セックス)


  1. ^ "S1 Website" (in Japanese). Retrieved 2009-02-16.  
  2. ^ "Company Info for". Alexa. Retrieved 2009-02-16.  
  3. ^ "山根愛美 -Megumi Yamane Blog" (in Japanese). Retrieved 2009-02-16.  
  4. ^ "Movies By Label: S1". Urabon Navigator. Retrieved 2009-02-16.  
  5. ^ "DVDレンタル > レーベル > S1 NO.1 STYLE" (in Japanese). DMM. Retrieved 2009-02-16.  
  6. ^ a b "JAV News - Are There Japanese Adult Video Awards Like AVN Awards in USA?". JAV News. August 26, 2008. Retrieved 2008-10-01.  
  7. ^ Otsubo, Kemuta (July 12, 2006). "速報!AV OPEN結果発表 (Preliminary AV Open results)" (in Japanese). All About. Retrieved 2008-10-01.  
  8. ^ "2nd AV Open Results" (in Japanese). Retrieved 2008-10-02.  
  9. ^ "AV Grand Prix 2008 Results" (in Japanese). Retrieved 2008-10-03.  
  10. ^ "VEGASNIGHT 2007" (in Japanese). DMM. Retrieved 2009-02-10).  
  11. ^ "AVGP 2009 Result announcement" (in Japanese). Retrieved 2009-03-02.  
  12. ^ "S1 Actresses" (in Japanese). Retrieved 2009-02-16.  
  13. ^ "S1 Series" (in Japanese). Retrieved 2009-02-16.  
  14. ^ "JAV Film Series: S1". Urabon Navigator. Retrieved 2009-02-16.  

External links

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