Top-class lesbian athletes Riku Minato, Miku Abeno, and Yuki Natsume triple co-star! - ! - Miku, a member of the Shirayuri Women's University of Physical Education triathlon club, has been improving her time with the ``enthusiastic guidance'' of her advisor, Yuki. - Yuki, who feels immense joy in making a diamond in the rough sparkle through ``lesbian training'', is looking for the next diamond in the rough. - ...One day, Yuki hears a rumor about an athlete named Riku Minato who belongs to the triathlon club of Hanazono University of Physical Education.