
Cast Info Pending
Celebrating 15 years of the iconic 'Back-Arching' series with a massive special edition. Watch as they lose control under the influence of spiked oils and steam, arching their bodies in pure ecstasy. Featuring brand new scenarios like house-call massages and secret room confinement, this is the most intense compilation yet.




















*It's going to be amazing ...but it's not a normal method after all. I think it would be more worthwhile to do something like this to a 50-year-old mature woman who has run out of sex. I'm sure I still have the stamina. It would be great if you could enjoy it for about 10 years after that. The fourth one is a digest version, where the woman from the 20th minute reacts the most erotically. Next time is 45 minutes
The process of the second girl falling into depravity was excellent. The first girl had a sexy body too, but she gave in too easily, which was a bit of a letdown. In contrast, the scene where the second girl flees to the locker room and desperately tries to change her clothes is arguably the best in the series. Maybe this, rather than the arched-back poses, is the real highlight of this series.
In the main feature, four women perform the 'shrimp' (arched back) pose. 1st: Anna Natsuki - Big-breasted clerk (75 min), 2nd: Ayu Sakurai - Arrogant model (87 min), 3rd: Rina Uchiyama - Flexible wife (80 min), 4th: Mao Kurata - Innocent wife (123 min). While the runtime per person is longer than the standard version, the highlight is definitely Mao Kurata; it's rare to see her being violated for two full hours like this. She also reappears in the 6th installment, the Reunion SPECIAL edition. The included compilation covers 2 hours of series 1-4. All 13 actresses are featured, but at only 8-10 minutes each, treat it as an index. Most of the signature ending 'shrimp' squirt scenes are included. The actresses in order of appearance are: Ai Uehara / Mao Mizusawa / Yui Aikawa / Haruki Sato / Hana Yoshida / Ayaka Tomoda / Yu Shinoda / Hibiki Otsuki / Ayumi Iwasa / Chigusa Hara / Rina Ito / Rin Kibana / Mika Osaki. (The last one, Osaki, is a unique piece where the practitioner gets hooked on aphrodisiacs.)
The last girl's moaning was unpleasant, and her sudden personality shift was a total turn-off. It says there are 13 people in total, but there were only 3. It was such a mood-killer that I lost all interest. On the flip side, the impact of the moaning was just too much. Watching the back-arching scene, I just kept thinking, 'She's bouncing, she's bouncing,' which killed my mood and made me feel like I was watching something disturbing. Anyone who gets excited by this is seriously messed up. Their take on sex goes beyond ecstasy—the actresses' eyes were rolling back and they were drooling; it was dangerous sex that goes beyond just being a fetish. It was so intense I thought their bodies might break. There were so many dangerous scenes that my adrenaline just stopped, and I started feeling disgusted. She has a great figure, but the actress who did this probably needs psychological counseling to return to normal. It was that dangerous and disturbing. Smearing aphrodisiacs all over the body to the point of breaking the brain is just too dangerous in every sense.
The first actress had great breasts. Spa-themed videos are best with big breasts; they just look better. However, the second actress, Ayu Sakurai, has a bad figure, is flat-chested, and is just trashy, so I fast-forwarded. Finished it in a minute. Honestly, she was unnecessary for this production.