UMD-861 - Inciting incestuous play, sister loses control and goes all the way

The girls themselves are all solid. Personally, I liked the third girl, Hibiki Otsuki's tongue work, but I have no idea why they put her in that color outfit. The second girl, Kokona Okura, has the best, most enticing breasts, but the guy doesn't get hard at all, which is a problem for the video. As for the first girl, Satsuki Mei, her 'face acting' was just as exaggerated and artificial as Misato Nonomiya's, and the shape of her breasts isn't my preference. The plot for all three episodes is completely incomprehensible. That kind of development between siblings is beyond unrealistic. The director must be an only child. I bought it on a 50% off sale, but even at half that price, it's too expensive. Also, I saw the word 'happening' and thought it was accidental, but in reality, everyone except Satsuki Mei is grabbing and fixing him, trying to swallow him themselves. Overall, I don't know what the point of this video was.