I explained that it was a masturbation support job for Yui Hatano, a famous actress, and secretly filmed another project. Yui-chan couldn't stand it anymore and started masturbating without knowing that she was being secretly filmed. After that, I was frustrated with the frustration during filming, and filmed how I was passionately masturbating during breaks and in the bathroom. This work is a documentary that repeatedly masturbates to turn it into a state of breaking down the technique and going crazy with abnormally pleasurable masturbation.