The book was published at the Kindle Store.
It is the English version.
This book is wonderful wisdom of ancient India into one volume.
I examined the relationship between Tantra and Kama Sutra, and further judged from Japan’s AV(Adult Video) making experience.
Using many CG images.
The main sites are as follows.
I sell it at Kindle store in various countries around the world.
Please try searching for “B07CQ3Y57J” on Amazon in your country.
Perhaps it’s an adult page.
The price is 4.99USD.