"Hey, have you ever played volleyball?" The cold marriage... Sayuri's emotional anchor was her boyfriend, Hayata. Their intense sex made Sayuri dependent on him. One day, while watching TV in the hotel, Hayata suddenly asked Sayuri if she had any volleyball experience. Sure, she was tall, but completely inexperienced. However, when Sayuri answered "zero experience," Hayata handed her a uniform and declared himself her coach. Sayuri was bewildered, but didn't want to be disliked by Hayata... With that single-minded determination, she decided to join the lewd and perverted volleyball club...