SONE-641 Highlight: K-Cup Washio Mei Drains My Balls Every Day in a Workplace Where All Ladies Wear Swimsuits

Heaven Is A Place on Earth. Who wouldn’t want to work in a place surrounded by hot women in skimpy swimsuits. SONE-641 showcases just that, featuring S1 veteran Washio Mei as a swimsuit maker employee. The hook being that she spends the entire time wearing her own products that barely conceal her K-cup huge tits.

The movie has a total 5 scenes, each with some form of titty fucking, with only the first one ending in a titfuck cumshot.
Table of Contents
TF = Titfuck, AJ = Assjob, TJ = Thighjob
Movie Details

Movie Name | 就職した水着メーカーは女性社員が水着姿の世界。勃起してもKカップの教育担当・鷲尾さんが抜いてくれるのでボクの金玉は毎日カラッポ SONE-641 The Swimsuit Manufacturer I Got A Job In Is A World Where All The Female Employees Wear Swimsuits. Even If I Get An Erection, My K-cup Instructor, Washio-san, Jerks Me Off, So My Balls Are Empty Every Day. |
Studio | S1 NO.1 STYLE |
Release Date | 25th February 2025 |
Pinching Finish (挟射回数) | 1 Titfuck Cumshot (1 パイズリ挟射) |
Movie Highlights
Scene 1 – Swimsuit Titty Fuck (1 TF Cum)

The first scene sees Hajime being onboarded to the company and being introduced to his co-workers. Who all happen to be young ladies wearing skimpy bikinis, which apparently is the workplace culture there. So he also has to follow suit with a tight fitting speedo. With that cleavage being flashed around, he has trouble hiding his erection and so Mei being the responsible senior decides to help him out by titty fucking a cumshot out of him to calm him down.

I enjoyed the acting from both parties here. Hajime-kun’s tendency to overact fits well with these sorts of wacky stories, while Mei-chan is being very logical and matter-of-factly about the whole situation. She just continuing titty fucking him after seeing his still erect cock after the ejaculation, and unabashedly talks with her colleagues while doing so.

The paizuri was decent here. It lasted a good 7-8 minutes, and the titfuck cumshot had some volume with a teeny spurt at the beginning. Mei-chan’s lack of eroticism and the presence of the other two ladies in the background did lower the intimacy a tad for me, but I understand it’s for story reasons.

Performance (演技) | |
Eroticism (エロ度) | |
Pinching Technique (挟むテク) | |
Finish (射精度) | |
Average |
Scene Highlights
Scene 4 – Swimsuit Outercourse + Handjob

In scene 4, Hajime and Mei are waiting to present their new swimsuits. In the meantime, Hajime already has a raging boner from looking at her body. Mei puts her two designs to the test by letting his cock run wild on them till he ejaculates on her tits.

Some pretty hot bikini action here. The underboob tittyfucking especially with how supple and fleshy her tits are. Would have been a great scene if he came while fucking her like that. Sadly they had to end things with a boring handjob.

Performance (演技) | |
Eroticism (エロ度) | |
Pinching Technique (挟むテク) | |
Finish (射精度) | |
Average |
Scene Highlights
Summary
Overall a decent movie. It’s a typical “only guy working in a lingerie/swimsuit maker” story, dressed up with S1’s production value and one of their top busty star Washio Mei. My only complaint was that there was only one titfuck cumshot, when there’s several other instances where they could have given us more.
Still I hope this becomes a recurring series especially with the number of big tits actresses they have. My loins are already tingling just thinking about the likes of Tano Yu or Nagi Hikaru in this movie sporting all sorts of sexy swimwear.

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