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

Venturing into the wilderness, the skeptical Ryouta Murakami and the ambitious Kuroneko were on a quest to prove the existence of extraterrestrial life when a tragic accident occurred, reaping Kuroneko of her life and leaving Ryouta in a critically injured state. Ten years have passed since the disaster, and Ryouta is now living a normal life in high school. He vows to prove that aliens are real in honor of his late friend. A transfer student named Neko Kuroha unexpectedly arrives one day, bearing a striking resemblance to the late Kuroneko—even sharing a similar name. Most mysteriously, she seems to possess supernatural powers. As Ryouta takes more interest in Neko, he is drawn into a deadly world where dangerous scientists hunt magic-wielding witches that have escaped from their secret research laboratory. Neko is one of these escapees, but there are many others who are in similar situations, and it's up to Ryouta to protect them from their would-be captors.

The Yomota family is small and typical: father Kinekuni (42), mother Tamiko (38), and son Inumaru (17). One day, a beautiful girl appears at their front door, calling herself Maroko Yomota, granddaughter of Inumaru who travels back in time with a time machine to visit her ancestors. Even with Tamiko's strong objection, Kinekuni and Inumaru welcome her to stay with them, and the structure of a happy family has begun to collapse. (Source: ANN)

Five youths from Edo City explore a strange rocky island and discover the mecha that Doctor Hoarai had been creating in order to resist the impending attack by a race of subterranean rock people. Doctor Hoarai was ridiculed by the scientific community for his predictions that such an attack would take place. The youths decide to join the doctor (who was dead but had transferred his mind into a computer) in piloting the vehicles and protecting Earth. The Gowapper 5 Gordam team is born! With the aid of the giant fighting robot Gordam, the Gowapper team under the leadership of Youko Misaki must face the hordes of the inhuman subterranean people. (Source: AniDB)