This is the first OVA adaptation of volumes 1 and 2 of the manga at once by Herio, "Yamitsuki Pheromone," a talented COMIC E×E author who has been praised for his cute and romantic stories, with great emphasis on girls' breasts, and which perfectly show the mutual feelings of two people in love! The two OVAs will tell the story of the relationships of four different couples. 1 ["Addictive Pheromones."] Kido is a real outcast in his class. But things change, and one by one, circumstances lead to him becoming the object of attention of Hino-senpai, a beautiful girl who attracts the attention of all the students... And with each passing day, the mutual attraction of these high school students to each other only grows stronger... 2 ["After the Library Closes"] A literary high school girl with big breasts (who loves romance novels) and a serious Yankee boy (who loves this high school girl) have a forbidden affair in the library after school. What secrets lurk beneath the masks of these seemingly quiet and calm students? 3 ["Try harder! Maina-chan"] Maina is the girl that comes to her friend's house all the time, and who has become almost like a sister to him over a long time of acquaintance. One day, when they were relaxing in their room together, he told her that he was going to leave for Tokyo to find a job... Maina, unable to hold back her tears at such news, gathers up all her courage and confesses her love for him... 4 ["Let's Try Again"] Koji's first sexual experience with his beloved girlfriend Shiina ends in disaster, but he is still grateful to her for continuing to treat him as she did before, and so he, decides to make the most of this life lesson. And suddenly, one day, Shiina unexpectedly invites him to a hotel...