"Hey, have you ever played volleyball?" For Sayuri, exhausted by her cold and lifeless marriage, her only emotional support was her friend with benefits, Hatanaka. His intense sex gradually made her dependent on him. One day, while watching TV together in a hotel, Hatanaka suddenly asked her, "Have you ever played volleyball?" Sayuri honestly replied that despite her tall frame, she had no experience at all. But Hatanaka unexpectedly handed her a volleyball uniform and declared, "From today, I'm your coach." Confused and unsure, Sayuri still made up her mind to join—this lewd, perverted volleyball club—driven solely by her fear of losing him.