Since the subject is often omitted in Japanese, the following is translated with the subject complemented.
Sorry for my bad English.

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"invention"
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A private American company finally developed a mechanical machine that can control body size with the advancement of science and technology.
The presentation was broadcast on a video site in real-time. Even though it was late at night because of the time difference, I was still watching the video.

The presenter was a doctor from the U.S. who was also responsible for the development of this mechanical machine.

The live video showed a stage that looked like a typical presentation, a man in a white lab coat, and a box that looked like an office phone booth.

To be honest, I didn't understand much of the machine's mechanism, but it was clear that the iron phone booth-like box next to him was a machine that could change the size of the body.

It appeared that he was about to enter this box with his phone in his hand.
Then, the broadcast screen was split in two and the image of the phone that he was holding was also shown on one half of the screen.

He opened the door and went inside. It was pitch black inside, as shown by the phone camera, and from the outside I could not see what was going on.
The box made a gurgling sound from the exhaust fan, and after a while it stopped with a pshooing sound.
From the side of the stage, young women in a swimsuit walked towards the box.

The camera showed a large view of her face.
In the comments of the broadcast, many comments in Japanese were displayed, such as "Isn't that a Japanese gravure model?
She was often seen in the swimsuit section of youth magazines, but retired a few years ago for "higher education."

I remember her well because she had a calm face, large breasts, and a slender waist, but she retired just as she was about to become popular.
When she showered, she put her big tits on the glass in her bathing suit. She smiled kindly and I remember that the image of her big tits, disproportionate to her slender body, growing larger as they were crushed by the glass was very popular.

She opened the door of the box containing the doctor.
The live video on his smartphone, which had been dark ever since she entered the box, suddenly brightened to white as she opened the door.

It showed her large feet.
And the other camera zoomed in on the box.

Camera showed the doctor, who had shrunk to about 30 centimeters.
I couldn't help but say "He's really shrunk..." .

the doctor turned the phone up.
The view was angled so that it was almost raised directly above her, and it was impossible to see her face with her large breasts.

Then she squatted down in front of him.
She was in the so-called girl-sitting position.

Her feminine rounded thighs were touching the ground.
I could hear the doctor's chattering voice. It seems to be an introduction to show that anything in a box can be made smaller as it is, not just people.

From the camera on phone, I could see two large boobs spread out in front of me.
It appears as if a thin cord extending from her shoulders is somehow supporting the two large boobs.

'Doctor~ what are you gawking at?
The owner of those tits laughed and reached behind the doctor's back and pressed her hand against his massive chest.
The camera image squirmed but continued to neatly prove that it was a real event.

Several minutes have passed since then.

The gigantic play between her and the doctor continued after that.

They were well aware that if they took off their underwear, the video site would stop distributing the video, or were a number of things to show that the shrunken human being was as strong as the original body.

A doctor with more than half of his body sandwiched between giant boobs was saying something like, "I will not suffer any serious injuries," with a serious look on his face.
The screen of the phone switched to a selfie, showing the doctor, who could not hide his inward joy, and her huge smile.
Her smile had not changed at all from when he was popular in Japan.

She held the doctor in one hand and brought it up to her face.
Her well-formed face filled the screen of the doctor's phone.
Then she opened her huge mouth wide and tried to suck the doctor into her mouth.

The white teeth and bright red mouth showed, and from the view you could almost see the back of her throat.
However, the live was banned at this point, and the rest of the video could not be seen.

The effect was so great that a research firm estimated that the total number of views of the video, which was reprinted on various websites, might reach one billion.

CEO of the manufacturer apologized for the live and announced on its website that it would release the machine within a year.
Apparently, it was revealed in this apology that the doctor had long dreamed of being sandwiched between the boobs of a giant woman.

I thought to myself, "There are some people in this world with unusual tastes," and then I realized that I couldn't get the image out of my head of the moment when she tried to suck the doctor into her mouth.