movies whose title begins with the letter 「u」
| title | original title | code | studio | distributor | date |
| Undercover! Seap Meet 8 Hours 2-Disc-Set | 潜入！スワッピング同好会 8時間2枚組 | vsed-155 | SEVENEIGHT | 69 (six-nine) | 2020-11-28 |
| Undercover! Sex Class with a (Secret) Club for Married Women | 潜入！人妻（秘）サークルのセックス講習会 | Mokkori TV | Mokkori TV | 2009-03-19 | |
| Undercover! Sex Cult's Shocking True Conditions! Cult Leader Traps Mothers and Daughters With Sexual Mind Control - Highlights: ʺGet naked!ʺ ʺSuck my holy cock!ʺ ʺCleanse your womb with my divine cum!ʺ | 潜入！実在したエロ教団の内情暴露！ 教祖がおこなう母娘に仕掛けたHなマインドコントロール総集編 「さぁ裸になりなさい！」「私の神棒を舐めなさい！」「子宮を神棒で清めましょう」 | rezd-062 | RED | Sôshûhen | 2011-02-25 |
| Undercover! Sex Stories After School!! A Secret Orgy Party Room Where You Can Fuck JKs On Their Way Home From School | 潜入！放課後のSEX事情！！学校帰りのJKと本番OKな 秘 乱交パーティルーム | dusa-015 | STAR PARADISE | MEDUSA | 2015-12-20 |
| Undercover! Super-Sexy Dance Show In Akasaka 4 Hours | 潜入！赤坂 超セクシーダンスショー4時間 | okax-269 | K.M.Produce | Okazu. | 2017-09-22 |
| Undercover! Swap Party Deluxe: A Little Known Secret Couples Orgy Club In The City | 潜入！ スワップパーティーDX 都内某秘密クラブ夫婦乱交の穴場 | vikg-033 | STAR PARADISE | VIKING | 2010-10-15 |
| Undercover! The Lymph Massage Parlor Everybody's Talking About 5 ”How About Our Secret Options?” | 潜入！！噂のリンパマッサージ店 5「裏オプション、いかがなさいますか？」 | umd-762 | LEO | LEO | 2021-01-02 |
| Undercover! The Rumored Lymphatic Massage Shop 9 ”How About The Secret Option?” | 潜入！！噂のリンパマッサージ店 9 「裏オプション、いかがなさいますか？」 | umd-800 | LEO | LEO | 2021-11-05 |
| Undercover! Tokyo Hospital! Voyeur Footage of Patients Masturbating! 48 Girls Whose Desire Wakes In Hospital Wards | 潜入！東京都・某病院！ 入院患者のオナニー盗撮 48人 女子病棟でおきている女の性欲 | tsp-010 | Tôkyô SPECIAL | Tôkyô SPECIAL | 2009-11-07 |
| Undercover!! Secret Lymphatic Massage Parlor 6 ”How About The Secret Option?” | 潜入！！噂のリンパマッサージ店 6「裏オプション、いかがなさいますか？」 | umd-770 | LEO | LEO | 2021-03-05 |
| Undercover!! The Hotly Rumored Lymph Node Massage Parlor 11 ”Would You Like To Try Some Of Our Secret Optional Services?” | 潜入！！噂のリンパマッサージ店 11「裏オプション、いかがなさいますか？」 | umd-824 | LEO | LEO | 2022-05-12 |
| Undercover!! The Underground Sex Industry 4-Hours The Places You Won't Find Published In Normal Classifieds | 潜入！！ 裏風俗 4時間 三行広告にすら載らない風俗の実態 | sgsr-075 | BIG MORKAL | Shin Ikusagumi | 2012-06-25 |
| Underdeveloped Student: Virgin's Vaginal Exam | 未発達○学生 処女膜検診 | vandr-009 | V&R PRODUCTS | V&R PRODUCTS | 2012-11-08 |
| Underdog Idol Shooting ʺNo Close-Upsʺ Hinano Kikuchi | 未満式アイドル撮影会『激シャ無理』 菊池ひなの | mmnd-109 | Miman | Miman | 2015-03-01 |
| Undergarment Manufacturer WAKOSUKE Winter Elegance Collection 2017 Hana Haruna | 総合婦人肌着メーカーWAKOSUKE～Winter Elegance Collection 2017～ 春菜はな | icmn-008 | AVS collector’s | AVSCollector’s | 2017-12-13 |
| Underground Adult Video Interview, Huge Tittied Amateurs Get Straight to Fucking Part 1 | 裏AV面接即ハメされた巨乳素人 ぱーと1 | alb-093 | Mune KYUN Kissa | Muna KYUN Kissa | 2010-11-19 |
| Underground Adult Video Interview, Huge Tittied Amateurs Get Straight to Fucking Part 2 | 裏AV面接即ハメされた巨乳素人 ぱーと2 | alb-095 | Mune KYUN Kissa | Muna KYUN Kissa | 2010-12-19 |
| Underground Airi Suzumura Airi Suzumura In 4 Furiously Mature Sex Scenes | 裏・鈴村あいり-鈴村あいりのオトナの激情SEX4本番 | abp-627 | PRESTIGE | ABSOLUTELY PERFECT | 2017-08-11 |
| Underground Anal Auction Top Secret Video Footage | 地下アナルオークション 極秘映像 | nitr-017 | Crystal Eizou | NITRO | 2013-08-16 |
| Underground Anal Audition | 地下アナルオーディション | gvg-475 | Glory Quest | GLORY QUEST | 2017-04-20 |
| Underground Anal Slaves For Sexual Gratification | 性処理用地下アナル奴隷 | gvg-280 | Glory Quest | GLORY QUEST | 2016-03-17 |
| Underground Asami Ogawa | 裏 小川あさ美 | ofm-001 | PRESTIGE | FRIMMER | 2008-09-20 |
| Underground Ass Slaves Essential Best Seventh Anal Victory | 裏女尻奴隷エッセンシャルベスト 肛虐七番勝負 | cma-072 | CINEMAGIC | Cinemagic Memorial | 2018-09-19 |
| Underground Auctions BEST | 地下オークション BEST | nitr-264 | Crystal Eizou | NITRO | 2016-11-18 |
| Underground Bare Fucking With Blondes 196 The Ambition And Pleasures Of A Wicked Woman! The Juicy Pussy Of Betrayal! | 裏ブロンド生ハメ 196 極道女が抱いた野望と快楽！裏切りのジューシーマ●コ！ | ub-196 | Plum | Plum | 2015-10-01 |
| Underground Barely Legal's Exposed 1 | 裏・少女流出 1 | gs-269 | GOGOS | GOS | 2007-07-27 |
| Underground Barely Legal's Exposed 10 | 裏・少女流出 10 | gs-428 | GOGOS | GOS | 2008-03-28 |
| Underground Barely Legal's Exposed 11 | 裏・少女流出 11 | gs-448 | GOGOS | GOS | 2008-04-25 |
| Underground Barely Legal's Exposed 12 | 裏・少女流出 12 | gs-469 | GOGOS | GOS | 2008-05-30 |
| Underground Barely Legal's Exposed 13 | 裏・少女流出 13 | gs-487 | GOGOS | GOS | 2008-06-27 |
| Underground Barely Legal's Exposed 2 | 裏・少女流出 2 | gs-270 | GOGOS | GOS | 2007-07-27 |
| Underground Barely Legal's Exposed 3 | 裏・少女流出 3 | gs-288 | GOGOS | GOS | 2007-08-31 |
| Underground Barely Legal's Exposed 4 | 裏・少女流出 4 | gs-308 | GOGOS | GOS | 2007-09-28 |
| Underground Barely Legal's Exposed 5 | 裏・少女流出 5 | gs-327 | GOGOS | GOS | 2007-10-26 |
| Underground Barely Legal's Exposed 6 | 裏・少女流出 6 | gs-347 | GOGOS | GOS | 2007-11-23 |
| Underground Barely Legal's Exposed 7 | 裏・少女流出 7 | gs-367 | GOGOS | GOS | 2007-12-21 |
| Underground Barely Legal's Exposed 8 | 裏・少女流出 8 | gs-389 | GOGOS | GOS | 2008-02-01 |
| Underground Barely Legal's Exposed 9 | 裏・少女流出 9 | gs-409 | GOGOS | GOS | 2008-02-29 |
| Underground Barely Legal's Exposed Complete Edition Book 1 | 裏・少女流出完全版 第一巻 | gs-1336 | GOGOS | GOS | 2013-10-18 |
| Underground Barely Legal's Exposed Complete Edition Book 2 | 裏・少女流出完全版 第二巻 | gs-1348 | GOGOS | GOS | 2013-11-15 |
| Underground Barely Legal's Exposed Complete Edition Chapter 4 | 裏・少女流出完全版 第四巻 | gs-1369 | GOGOS | GOS | 2014-01-24 |
| Underground Barely Legal's Exposed Complete Edition Episode 3 | 裏・少女流出完全版 第三巻 | gs-1359 | GOGOS | GOS | 2013-12-20 |
| Underground Beautiful Girl's Only Production Special | ウラ美少女 完全限定生産スペシャル | uras-001 | KARMA | Ura Bishôjo | 2009-07-01 |
| Underground Best Hits - Yanai Hajime | 裏BestHits 梁井一 | vgd-159 | HMJM | pornograph.tv | 2015-06-27 |
| Underground Black Market Money Lending Sex Club. A Regular Lady's Downfall To Working At A Delivery Health... | 闇金風俗裏営業 普通のおばさんがデリヘル嬢に堕ちてゆく… | yoz-230 | STAR PARADISE | Yoru Ôzoku | 2013-10-20 |
| Underground Black Market Money Lending Sex Club. A Regular Lady's Downfall To Working At A Delivery Health... | 闇金風俗裏営業 普通のおばさんがデリヘル嬢に堕ちてゆく… （DOD） | yoz-230dod | STAR PARADISE | Yoru Ôzoku | 2020-02-27 |
| Underground Blonde Bareback Fucking 200 American Porno Is Intense, The Gutsy Pussies From The USA! | 裏ブロンド生ハメ 200 アメリカンポルノはつらいよ、USAど根性マ◎コ！ | ub-200 | Plum | Plum | 2016-02-01 |
| Underground Blonde Fucking 197 From The Underbelly Of Hollywood! Instinct And Ecstasy! The Extraordinary, Adulterous Pussy! | 裏ブロンド生ハメ 197 裏ハリウッド発！本能と快楽！型破りの不貞マ◎コ！ | ub-197 | Plum | Plum | 2015-11-01 |
| Underground Blonde Raw Fucking - Huh? She's Got A Dick?! Incredible Foreign Transsexual Anal Fucks! | 裏ブロンド生ハメ えっ！？竿付き！？美女大国の極上ニューハーフと穴掘り対ケツ！ | ub-209 | Plum | Plum | 2016-11-01 |
| Underground Blonde Raw Fucking 1 | 裏ブロンド生ハメ 1 | ub-01r | Plum | Plum | 2007-08-31 |
| Underground Blonde Raw Fucking 10 | 裏ブロンド生ハメ 10 | ub-10r | Plum | Plum | 2007-08-31 |
| Underground Blonde Raw Fucking 100 | 裏ブロンド生ハメ 100 | ub-100 | Plum | Plum | 2009-06-30 |
| Underground Blonde Raw Fucking 101 | 裏ブロンド生ハメ 101 | ub-101 | Plum | Plum | 2009-06-30 |
| Underground Blonde Raw Fucking 102 | 裏ブロンド生ハメ 102 | ub-102 | Plum | Plum | 2009-06-30 |
| Underground Blonde Raw Fucking 103 | 裏ブロンド生ハメ 103 | ub-103 | Plum | Plum | 2009-07-31 |
| Underground Blonde Raw Fucking 104 | 裏ブロンド生ハメ 104 | ub-104 | Plum | Plum | 2009-07-31 |
| Underground Blonde Raw Fucking 105 | 裏ブロンド生ハメ 105 | ub-105 | Plum | Plum | 2009-07-31 |
| Underground Blonde Raw Fucking 106 | 裏ブロンド生ハメ 106 | ub-106 | Plum | Plum | 2009-08-31 |
| Underground Blonde Raw Fucking 107 | 裏ブロンド生ハメ 107 | ub-107 | Plum | Plum | 2009-08-31 |
| Underground Blonde Raw Fucking 108 | 裏ブロンド生ハメ 108 | ub-108 | Plum | Plum | 2009-09-30 |
| Underground Blonde Raw Fucking 109 | 裏ブロンド生ハメ 109 | ub-109 | Plum | Plum | 2009-09-30 |
| Underground Blonde Raw Fucking 11 | 裏ブロンド生ハメ 11 | ub-011 | Plum | Plum | 2007-09-30 |
| Underground Blonde Raw Fucking 110 | 裏ブロンド生ハメ 110 | ub-110 | Plum | Plum | 2009-10-31 |
| Underground Blonde Raw Fucking 111 | 裏ブロンド生ハメ 111 | ub-111 | Plum | Plum | 2009-10-31 |
| Underground Blonde Raw Fucking 112 | 裏ブロンド生ハメ 112 | ub-112 | Plum | Plum | 2009-11-30 |
| Underground Blonde Raw Fucking 113 | 裏ブロンド生ハメ 113 | ub-113 | Plum | Plum | 2009-11-30 |
| Underground Blonde Raw Fucking 114 | 裏ブロンド生ハメ 114 | ub-114 | Plum | Plum | 2009-12-31 |
| Underground Blonde Raw Fucking 115 | 裏ブロンド生ハメ 115 | ub-115 | Plum | Plum | 2009-12-31 |
| Underground Blonde Raw Fucking 116 | 裏ブロンド生ハメ 116 | ub-116 | Plum | Plum | 2010-01-31 |
| Underground Blonde Raw Fucking 117 | 裏ブロンド生ハメ 117 | ub-117 | Plum | Plum | 2010-01-31 |
| Underground Blonde Raw Fucking 118 | 裏ブロンド生ハメ 118 | ub-118 | Plum | Plum | 2010-02-28 |
| Underground Blonde Raw Fucking 119 | 裏ブロンド生ハメ 119 | ub-119 | Plum | Plum | 2010-02-28 |
| Underground Blonde Raw Fucking 12 | 裏ブロンド生ハメ 12 | ub-012 | Plum | Plum | 2007-09-30 |
| Underground Blonde Raw Fucking 120 | 裏ブロンド生ハメ 120 | ub-120 | Plum | Plum | 2010-03-31 |
| Underground Blonde Raw Fucking 121 | 裏ブロンド生ハメ 121 | ub-121 | Plum | Plum | 2010-03-31 |
| Underground Blonde Raw Fucking 122 | 裏ブロンド生ハメ 122 | ub-122 | Plum | Plum | 2010-04-30 |
| Underground Blonde Raw Fucking 123 | 裏ブロンド生ハメ 123 | ub-123 | Plum | Plum | 2010-04-30 |
| Underground Blonde Raw Fucking 124 | 裏ブロンド生ハメ 124 | ub-124 | Plum | Plum | 2010-05-31 |
| Underground Blonde Raw Fucking 125 | 裏ブロンド生ハメ 125 | ub-125 | Plum | Plum | 2010-05-31 |
| Underground Blonde Raw Fucking 126 | 裏ブロンド生ハメ 126 | ub-126 | Plum | Plum | 2010-06-30 |
| Underground Blonde Raw Fucking 127 | 裏ブロンド生ハメ 127 | ub-127 | Plum | Plum | 2010-06-30 |
| Underground Blonde Raw Fucking 128 | 裏ブロンド生ハメ 128 | ub-128 | Plum | Plum | 2010-07-31 |
| Underground Blonde Raw Fucking 129 | 裏ブロンド生ハメ 129 | ub-129 | Plum | Plum | 2010-07-31 |
| Underground Blonde Raw Fucking 13 | 裏ブロンド生ハメ 13 | ub-013 | Plum | Plum | 2007-09-30 |
| Underground Blonde Raw Fucking 130 | 裏ブロンド生ハメ 130 | ub-130 | Plum | Plum | 2010-08-31 |
| Underground Blonde Raw Fucking 131 | 裏ブロンド生ハメ 131 | ub-131 | Plum | Plum | 2010-08-31 |
| Underground Blonde Raw Fucking 132 | 裏ブロンド生ハメ 132 | ub-132 | Plum | Plum | 2010-09-30 |
| Underground Blonde Raw Fucking 133 | 裏ブロンド生ハメ 133 | ub-133 | Plum | Plum | 2010-09-30 |
| Underground Blonde Raw Fucking 134 | 裏ブロンド生ハメ 134 | ub-134 | Plum | Plum | 2010-10-31 |
| Underground Blonde Raw Fucking 135 | 裏ブロンド生ハメ 135 | ub-135 | Plum | Plum | 2010-10-31 |
| Underground Blonde Raw Fucking 136 | 裏ブロンド生ハメ 136 | ub-136 | Plum | Plum | 2010-11-30 |
| Underground Blonde Raw Fucking 137 | 裏ブロンド生ハメ 137 | ub-137 | Plum | Plum | 2010-11-30 |
| Underground Blonde Raw Fucking 138 | 裏ブロンド生ハメ 138 | ub-138 | Plum | Plum | 2010-12-31 |
| Underground Blonde Raw Fucking 139 | 裏ブロンド生ハメ 139 | ub-139 | Plum | Plum | 2010-12-31 |
| Underground Blonde Raw Fucking 14 | 裏ブロンド生ハメ 14 | ub-014 | Plum | Plum | 2007-09-30 |
| Underground Blonde Raw Fucking 140 | 裏ブロンド生ハメ 140 | ub-140 | Plum | Plum | 2011-01-31 |
| Underground Blonde Raw Fucking 141 | 裏ブロンド生ハメ 141 | ub-141 | Plum | Plum | 2011-01-31 |
| Underground Blonde Raw Fucking 142 | 裏ブロンド生ハメ 142 | ub-142 | Plum | Plum | 2011-02-28 |
| Underground Blonde Raw Fucking 143 | 裏ブロンド生ハメ 143 | ub-143 | Plum | Plum | 2011-03-31 |
| Underground Blonde Raw Fucking 144 | 裏ブロンド生ハメ 144 | ub-144 | Plum | Plum | 2011-04-30 |
