Takahiko Oikawa is usually a dominatrix. She is a beautiful woman with a seductive aura. She has had a strong sexual Kokoro since she was young, and was intrigued by the anal play that makes M men go crazy in pleasure, so she decided to try filming the ``Extreme Anal Expansion'' series herself. The theme of this shoot was not only to expand the anal entrance as usual, but also to expand the ``deep intestines''...in other words, to the depths. She prepared 40cm and 60cm super long dildos. As expected, the 60cm dildo was enough if it could be inserted halfway because of its thickness and length... First, she started by relaxing her anus with her fingers in the traditional way. As she has experience with anal sex, her anus is very flexible, and she quickly swallowed two fingers into her anus, and the vaginal vibrator was immediately able to be inserted. Next, after carefully observing the inside of her intestines with a transparent speculum, we attached an attachment to the electric massager to check her anal sensitivity. As you would expect from a cool beauty like Kiwako, she moaned modestly, but she was definitely feeling it in her anus. And finally, she tried the main item of this shoot, the long dildo. First, the 40-centimeter dildo is slowly inserted. Although it hits the intestinal wall several times, it digs a tunnel into the intestine and is able to be inserted all the way to the base. At this point, there is no choice but to try the 60-centimeter super long dildo! Just by holding it in her hand, it is clear that the thickness, length, and weight are different from the 40-centimeter one. While smiling wryly at its sinister appearance, Kiwako slowly and surely accepts the lethal weapon into her anal. The surface of the skin on her abdomen is wriggling and bumpy, and you can see the tip of the dildo moving inside her intestines. As I stare with bated breath, Kiwako eventually manages to fit about 90% of it into her ass. However, there is the last obstacle...there is a bulge at the base that is as big as a fist. After several trials and errors, there is a popping sound and the super long dildo is completely buried in Kiwako's intestines! This is a must-see work that shows the ultimate in anal sex.