Unaired episode included with the DVD releases bundled with the re-release of the first three volumes of the manga.

In Japan, there exists a government agency known as the Supernatural Disaster Countermeasures Division (SDCD), whose duty is to protect the citizens from creatures unseen. They are able to dispatch these monsters swiftly and without alerting the general public. But currently, they face a different challenge: the betrayal of one of their own. After the death of her mother several years ago, Kagura Tsuchimiya has been fostered by the Isayama family and forms a close sister-like bond with their daughter Yomi. The two become inseparable, and together they work for the SDCD as highly skilled exorcists. However, as the stress and consequences of their sacred duty weigh on them both, and family politics come into play, Kagura and Yomi begin to slowly drift apart. One of them grows earnestly into her role as an exorcist, and the other heads down a dark path from which there may be no redemption.

Gakusen Toshi Asterisk 2nd Season continues the story of Genestella students Ayato Amagiri and Julis-Alexia von Riessfeld, who have progressed to the next round of the Phoenix Festa after a long and strenuous battle with sisters Irene and Priscilla Urzaiz. Despite Julis and Ayato's best attempts, the fact that Ayato's powers have been sealed is no longer a secret. Now at a major disadvantage, the duo must come up with a plan if they are to have any hope of winning the Phoenix Festa. Only one thing is for sure: the troubles heading their way are only going to get more insurmountable from here on.

Wasted from the night before, Kaede wakes up the next morning to find herself at home with a dinosaur she had brought along with her. The two start living together as an odd pair consisting of a typical gal girl and a mute dinosaur going about daily lives. Although not the most experienced paleontologist, Kaede begins to learn more about her new prehistoric roommate through a series of comedic gags and adventures.