The fourth installment in the series features popular mature actress Yuu Kawakami! Her thick, long tongue produces abundant saliva, and the copious love juices that overflow create a rich, syrupy sensation akin to aromatic massage oil. Packed with intense saliva play—including deep kissing, fellatio, nose licking, and full-face licking—the entire experience remains thoroughly wet and moist. In the climax, she uses her own saliva, collected over a week in a plastic bottle, to engage in an extremely messy, gooey, intertwined sex scene. This is the ultimate wet and filthy experience brought to life.