(Dub)

Marion is a young schoolboy who prides himself on his adherence to a philosophy he calls "rationalism". Because of his disdain for emotional display, he ignores anything remotely akin to affection. But when he's entangled in a romantic affair with an older courtesan, his rationalism is revealed to be little more than a cover for his own emotional immaturity. Learning to love, Marion blossoms under his older lover's care but unfortunately, Marion has yet to learn the true price of the affair. (Source: ANN)

The girls of the Amusement Club return in Yuru Yuri♪♪, finding new ways to make passing time even more enjoyable. Their members consist of the always energetic Kyouko Toshinou; calm and sensible Yui Funami; polite but often overlooked Akari Akaza; and Chinatsu Yoshikawa, who stumbled upon the others while looking for the Tea Ceremony Club. Together they are the Amusement Club, which has the deceptively simple task of keeping its members entertained. Along with the Student Council and the odd family member, they strive to enjoy their youth to the fullest. Whether it's a trip to a hot spring or finishing overdue homework, their lives are never dull, and they will always find an excuse to spend time together. [Written by MAL Rewrite]

The fate of mankind is doomed in the early 21st century due to losing "purana," an essence of living force supporting all life forms. Not willing to witness the extinction of mankind, a vampire named Duo disclosed the secret of purana to humans, saving the latter from destruction. However, just like Prometheus in Greek mythology got punished for bringing fire to mankind, Duo is punished for breaking the taboo. The vampire sent to punish him is Zieg, Duo's best friend, or, more than the best friend. (Source: ANN)