A man who fails his university entrance exam and lives a ronin life. A gal from my neighbor who wants to concentrate on studying for the entrance exams, but makes a fuss every night. No matter how many times I warn him, he gets angry. Finally, the ronin man's patience dies out and begins to take revenge. They make a fuss until morning, and attack from behind a woman who has sent the men back to their room. "Hey, are gals good at cowgirl positions? Swing your hips even more vigorously." And so, a cowgirl gangbang party begins with the gangbangs of the students who attend to gals.