After receiving a package filled with XL Size condoms as part of a work assignment, Saki somehow ends up at home with her co-worker Keisuke and he just so happens to be able to fit an "XL", so he decides to "help her out" with her assignment.

Did you know that groping is a form of art?Kazuo Sugimoto is your typical young salaryman until he is wrongfully accused of molesting a girl on a train and forced to confess.After finding and confronting the true culprit, Kazuo becomes the man's 500th apprentice in Chikan-do: The Way of the Groper. Follow Kazuo's saga as he learns strategies such as The Berlin Wall, The Battle of Odawara and works to master his own technique The Gold Finger. Chikan-do: It will change the way you think.