A revolutionary AV fantasy that will make you cum with the gap between seriousness and lewdness! A new erotic world where you can't predict what will happen next as the seriousness returns mercilessly even during sex! The eroticism changes suddenly and dramatically, and a countdown will notify you 10 seconds before the change! The bank edition, female announcer edition, and hospital edition will get you excited by the sudden change between everyday life and the extraordinary, and the difference between seriousness and lewdness will make your ears ring!