Junya and Sanae are a fresh and innocent couple who have just started dating. Everything seems to be going smoothly, and today they are spending their first night together and having their first intimate moment!? Just as they were getting excited about it, Junya suddenly says, "I can't do it." Unable to ask for the reason, they awkwardly get into the same bed, but Sanae, at least wanting to sleep close to him. Then, something unbelievably hard and large hits her lower back...!?
