It's been over a decade since graduation, and the class reunion brought everyone together again. While catching up with old friends, Sayu couldn't help but be drawn to her first love, Keisuke. And it seemed he felt the same way. Despite knowing they were both married, they somehow ended up exchanging contact information that day. Back then, they couldn't even hold hands, but now they're both adults. Keisuke is captivated by Sayu's mature and alluring body, the wife who has blossomed into a woman. To fill the void left by her husband's lack of attention, Sayu embraces Keisuke and they passionately make love over and over again...