After escaping the zombie-infested mainland, Takashi Komuro and the gang find themselves on a remote island off the coast of Tokonosu City. While scavenging around the island for supplies, they encounter a small seaside shack that provides them with clothing and a place to rest for the night. After a day's work of collecting food, they begin to cook what they have gathered. As they wait beside the campfire, a light haze begins to form around them and makes them nauseous. Confirming it to be caused by hydrangeas—a type of poisonous plant that can cause hallucinations—the group attempts to escape from the powerful odor.

Not long after putting the previous supernatural incident behind them, the members of Yamaboshi Academy's Student Cultural Society (StuCS) must deal with Fuusenkazura's newest trial—emotion transmission. This phenomenon allows the club members to hear each others' true thoughts, but with one catch: the timing, sender, and recipient are all completely random. To make matters worse, the club's supervisor, Ryuuzen Gotou, may have to step down due to his responsibilities for the upcoming school year. With emotions running high and Valentine's Day around the corner, the seemingly close bonds of the StuCS will be tested when their true feelings for each other are laid bare.

Yoshino Hide is an average girl who always seems to find trouble wherever she goes. One day Yoshino visits a local shrine to pray in order to pass her upcoming test. However, Yoshino sees a blue light coming from inside the Shrine and looks inside to find a mysterious person performing a magic spell. In a stroke of bad luck, Yoshino trips on a small bell and crashes into the shrine, prompting the stranger to catch her. Upon Yoshino's capture, the magic spell spirals out of control and sends Yoshino back in time to the Sengoku Era. Yoshino then encounters Akechi Mitsuhide and Oda Nobunaga. But unlike what really happened during the era, Hideyoshino realizes that everyone in the world is female. She then decides to help Oda Nobunaga find the Crimson Armor which is said to allow the person wearing the armor to conquer all of Japan.

Unaired episode 11.5 included with the second Blu-ray/DVD volume.