So, I Hear You Like Sadistic Woman Version Final by Stiletto from lune

Overview:
main character is a salaryman who has just left college.
I was assigned to the business of a company that puts sporting goods into the school and managed to
go out to work by myself.

One day, someone touches the crotch while commuting, and the cock caressed softly is ready for war.
When he looks around in surprise, a large woman who is right behind her is
turning her arms around the hero and touching her crotch. At any rate, it is not an atmosphere of accidents or mistakes.​