Kyotaro Kakei has always had an affinity towards books in hopes to find answers to his life. With a mentor's promise, he continues to search for a book with his absolute hope. However, this changes when he receives a foretelling message saying that "Today, something will happen that will change your fate. --From the Shepherd." Due to this premonition, his normal school life at Shiomoi Academy becomes entangled due to the optimistic Tsugumi Shirasaki and the Shimoi Happy Project.

Three miny stories about working woman, the first one about the window-cleaning lady that enjoys having sex games with one of the office workers through the glass, the second a waitress and her manager, and the final one an office lady that enjoys having the lead on sex.

One evening in fall, with one month left before the school festival, the last member of the ruined light music club, Haruki Kitahara, looks out the window and plays his guitar in the direction of the festival stage set up outside. This was the simple little adventure that the conscientious honor student had hoped for two and a half years to achieve before his graduation in half a year. But then, when a flowing piano melody and a bell-like singing voice joined the clumsy sound of his guitar...