Yamaguchi has a unique constitution that produces pheromones that endear him to animals. It's not supposed to have any effect on humans, but for some reason, Mayama, a librarian at the university, is fascinated by the pheromones and starts begging him for them!

Matsuura, stressed and frustrated from working overtime due to his arrogant boss, encounters a beautiful, model-like security guard late one night. He steals his first kiss and even plays with him down there, leaving him feeling refreshed! But...?