
A beautiful I-balance pose with legs stretched straight to the tips. Flexible girls provoke you with extreme splits, wearing various costumes, mini skirts, and risky hot pants that make you worry their joints might pop. They cast off their panties, showing off their bare pussies and assholes with even wider splits and a smile.




















As you might notice from the thumbnail, the girl on the cover appears in the second half, but she looks like a completely different person. Honestly, I think she looks cuter on the cover. The pose with both legs behind her neck is a masterpiece! When I first discovered this series, I was so impressed by the brilliant idea of combining contortion with panty shots. But since they've gone through the trouble of showing panty shots, it feels like a waste to have her take them off. If I could state my ideal, selfish preference, it would have been perfect if they had focused solely on the contortion and panty shots. I don't know what others think, but while this 4th installment isn't bad—it's actually good—it feels a bit lackluster. Does it feel shorter in volume to anyone else, or is it just me?
The panties in the I-balance pose are shown in such close-up, it feels so real I just want to bury my face in them. Hina appeared first in a modest outfit; personally, I thought Rei Asamiya from the cover looked better, but my impression changed after watching. The outfit choices—family restaurant uniform, yukata, reggae-style sexy outfit—were all great. Seeing her endure finger play and vibrators in that I-balance pose is irresistible. As for Rei Asamiya in the second half, her hairstyle with the cheongsam at the end looked a bit like an 'ajumma' (middle-aged woman), which I didn't really like.
Recently, there's been a flood of 'contortionist' works, but most treat flexibility as nothing more than a prelude to sex or just another position. In this climate, Director Kasai is the only one left who tackles contortionism head-on as a fetish. Because my expectations were so high, I've given a rather harsh review. What didn't work was that the actress wasn't filmed very attractively. This isn't limited to this work but is a general issue with Director Kasai's films; I suspect there's a problem with the makeup or lighting. On the other hand, the anecdotes about the actress herself, inserted during interviews and other segments, are highly rated for how well they fuel the imagination. What I particularly want to highlight this time is the bulge in the actress's crotch and the stray hairs visible.