This work is a revolution in piston techniques! The collaboration between Moribayashi Genjin and Misaki Kanna has brought a fresh breeze to the AV world. I actually watched it and was overwhelmed by its depth. First, Moribayashi's explanations are exceptionally clear. His credentials of over 10,000 experiences and a deviation value of 78 shine through. His 'absolute piston techniques to induce internal orgasms' are gem-like information useful for everyone from beginners to experts.

The beginner section carefully explains basic pistons and four types of secret techniques. The tips for insertion in missionary, doggy, and cowgirl positions are vividly conveyed through video. The intermediate section reveals the secrets of positions that allow deep penetration even without a large penis. The advanced section discloses hidden switches to easily trigger internal orgasms. All of this is genuine practice without acting or directing, making it highly reliable.

Misaki Kanna's presence is also significant. Her real reactions clearly demonstrate the effectiveness of the techniques. In the scene with a rookie actor after the lecture, clumsy pistons transformed into ones capable of inducing internal orgasms, and the growth was astonishing. The bonus toy masturbation scene is valuable as a learning supplement.

Integrating the feedback comments, many viewers praise it as 'necessary as educational material,' 'Moribayashi's explanations are godly,' and 'an eye-opener.' It's so practical that even sex workers are moved, and it corrects the mistaken imitations of AV. This work is recommended for all men who want to satisfy their partners. It's a must-see piece that you'll regret missing for a lifetime!