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Cast
Rina Hatsume
as (archive footage)
Yumi Ohara
as (archive footage)
Arisa Takanashi
as Cast
Mahina Amane
as (archive footage)
Yui Saotome
as (archive footage)
Mai Imai
as (archive footage)
Miyuki Sakura
as (archive footage)
Riko Shinohara
as (archive footage)
Yui Tenma
as (archive footage)
Ichika Kasagi
as (archive footage)
Movie Info & Details
Release Year2025
Runtime4h 00m
LanguageJapanese
CertificationNR
GenresDocumentary
Votes—
Director—
Writers—
TypeFeature Film
RatingNot rated yet
Cast10 credited
Also Known AsUMSO-587 Immovable!! 53 Flat-chested Women in Cowgirl Position with Almost No Shaking
About UMSO-587 Immovable!! 53 Flat-chested Women in Cowgirl Position with Almost No Shaking
The face of a girl writhing in pleasure, her small breasts trembling slightly, the intense pleasure that surges with each movement of her hips, the girl who loses herself in agony as she is thrust up from below, the man whose face shows a mixture of agony and pleasure as he tries to hold back his ejaculation... This time, we have carefully selected 53 beautiful girls with beautiful small breasts, and we will deliver to you a full 4 hours of cowgirl scenes where you can enjoy the exchange of offense and defense! Enjoy!
Directed by —, UMSO-587 Immovable!! 53 Flat-chested Women in Cowgirl Position with Almost No Shaking leans on a strong ensemble — Rina Hatsume, Yumi Ohara, Arisa Takanashi — to carry a story that balances spectacle with character.
The film landed with audiences for its craft and performances, and remains one of the most talked-about documentary titles of 2025.
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