On a hot spring trip with three mom friends, they encounter a black tourist with bad manners. In order to teach them proper manners, they try to interact with each other with gestures, but they are swallowed up by the misunderstandings of cheerful black people who don't understand Japanese, and they are shown their erect jet-black mega cocks. I'm amazed at the black cock I see for the first time, but I can't suppress my curiosity! I am fascinated by the stimulation of the first experience and I get excited.
