Akihiro is a teenaged boy with fantasies. He's about to have date with his girlfriend Miyuki when he finds a strange carpet on his way home. Home, a pretty and over-energetic girl named Malon appears from the carpet. She tells Akihiro about the world of Phantasia and wants to live with Akihiro. But even if Akihiro loves pretty girls, he becomes angry with Malon's magical powers and drives her away. The maniac wizard, Roll, who wants to kill Malon, doesn't help at all.

Emperor Muge Zarbados and his Empire of Death decide that their next conquest will be the faraway planet of Earth. Muge becomes even more fearsome because of Shapiro Keats, a power-hungry Earthling-turned-traitor. It's up to Shinobu, Sara (Shapiro's old girldfriend), Masato, and Ryo of the Jyusenkitai/Cyber Beast Force to pilot the four Jyusenki/Beast Mecha (Eagle Fighter, Land Cougar, Land Liger, and Big Moth [a mammoth mecha]), which can combine into the giant mech Dancougar. (Source: ANN)

Twin Blood is an alternate version of Blade and Evil's first battle, with drastically different character and mecha designs from the rest of the series. Blade/D-Boy does not need Pegas to transform and the armor more closely resembles the Radam humanoids from Tekkaman Blade II.

Continuation of Teppei's journey with B't X to rescue his brother Kotaro Takamiya from the Machine Empire. The OAV series picks off from the TV series from the point where Hokuto successfully saves both Teppei and B't X and makes B't X far more powerful than before. (Source: ANN)