The official website of the television anime adaptation of writer Senri Akatsuki and illustrator Ayumu Kasuga's (Jōkamachi no Dandelion) Saijaku Muhai no Bahamut (Undefeated Bahamut Chronicle) light novel series began streaming a promotional video for the anime on Tuesday. The video previews the anime's opening theme "Hiryū no Kishi" by TRUE.

Narrator: Five years ago, the Arcadia Empire, who had spread their tyranny throughout the world, was brought down by a coup d'etat. A coup brought about by a lone machine, whose identity remains unknown even now. That Drag-Knight gave shape to the people's fears, and earned the name...

Narrator: The Black Hero.

Girl: This is the story of a boy who was called "the weakest."

Girl: TV anime Undefeated Bahamut Chronicle . Airing in January.



Kadokawa is also streaming 30- and 15-second commercials for the anime.

The anime will premiere on January 11.

The story of the light novel series revolves around Lux, a former prince of an empire named Arcadia that was overthrown via a rebellion five years earlier. Lux accidentally trespasses in a female dormitory's bathing area, sees the kingdom's new princess Lisesharte naked, and incurs her wrath. Lisesharte then challenges Lux to a Drag-Ride duel. Drag-Rides are ancient armored mechanical weapons that have been excavated from ruins all around the world. Lux used to be called the strongest Drag-Knight, but now he's known as the "undefeated weakest" Drag-Knight because he will absolutely not attack in battle. After his duel with Lisesharte, Lux ends up attending the female-only academy that trains royals to be Drag-Knights.

The cast includes:

Mutsumi Tamura as Lux Arcadia



Lynn as Lisesharte Atismata



Yukiyo Fujii as Krulcifer Einfolk



Yurika Kubo as Philuffy Aingram



Risa Taneda as Celistia Ralgris



Ari Ozawa as Airi Arcadia





Masaomi Ando (Gakkō Gurashi!, Muv-Luv Alternative: Total Eclipse, White Album 2) is directing the series at Lerche (Assassination Classroom, Monster Musume, Danganronpa The Animation). Yuuko Kakihara (Heaven's Lost Property, Unbreakable Machine-Doll) is handling the series composition, Keiko Kurosawa (Assassination Classroom, Re:_Hamatora) is designing the characters for animation, and Orange (Accel World, Terror in Resonance, Tiger & Bunny) is producing the 3D CG animation.

The additional staff includes:

Chief Animation Directors: Keiko Kurosawa/Mayuka Itou

Prop Design: Tomohito Hirose

Art Design: Iho Narita (Kusanagi)

Art Director: Kuniaki Nemoto (Kusanagi)

Color Key: Mio Takekawa

Director of Photography: Naoki Seizawa

Editing: Morita Editing Room

Sound Director: Jin Aketagawa

Sound Effects: Yasumasa Koyama

Sound Production: Magic Capsule

Music: Akito Matsuda

nano.RIPE ( Hanasaku Iroha , Humanity Has Declined ) will perform the ending theme "Lime Tree."