If you could meet once again... Paraiso pivots on the cross

The girl who asks for the connection with the world after death "is beautiful, and the girl of the changing person visits the man of a certain person. The man was a historian and published a book called "Paraiso on the cross" spelling "there is a way to see the world after death". The girl who is interested in the contents of the book and wishes to become a man's assistant. The man who agrees to it. Suddenly, torture... What is the world seen before the actual experiment? Otsuki AOI performed. I am worried about bondage hanging, candle blame, shovel, torture play!