OVA - S0.E1

With the summer crisp smell in the air, Jun'ichi and the group head to one of Ayanaounji's Families privately owned islands. To have a so called "Student Vacation" But, the school president has a plan to make this vacation as perverted as possible. Though a much concieted effort, she exclaims to have received sun skin lotion from a sponsor company of hers. In a scene it shows on the lotion containers. "Warning, May cause extreme daringness" "Ingredients, etc, etc, etc" in other words, a love potion. With this the girls each on their own torment Jun'ichi throughout the day and have a perverted but entertaining time. Thus Nagomi comes in with her alienated antics and saves the day by knocking everyone out with her chopoooo's. The following morning everyone thinks it was just a dream. Thus ending their perverted vacation, as well as the series.