【English Version】
In 205X, humans continue to challenge the limits of sexual pleasure.
The most efficient ways to produce sexual pleasure is Sex Machine.
In order to study how to induce pleasure faster and stronger, the Sex Machine Room came into being. Countless rooms are equipped with pleasure machines of various designs.
However, the effect of machinery can only be obtained through use. Each machine must go through a long period of testing, and even more testing after improvement.
What immediately followed was a shortage of subjects. Researchers will do anything to obtain subjects.
Girls come to the room as subjects have various reasons. Some came to pay off debts, some were deceived, and some came on their own thinking it was an easy job.
However, what awaits them is the nightmare of being fixed on a crudely designed machine and constantly losing consciousness due to orgrasm...
美少女同人電子書籍
