On the front lines of the war, there is a little girl. Blond hair, blue eyes, and porcelain white skin, she commands her squad with lisping voice. Her name is Tanya Degurechaff. But in reality, she is one of Japan's most elite salarymen, reborn as a little girl after angering a mysterious being who calls himself God. This little girl, who prioritizes efficiency and her own career over anything else, will become the most dangerous being amongst the sorcerers of the imperial army.

Director: Yutaka Uemura (Dantalian no Shoka)
Assistant Director: Kana Harufuji (Episode Director of Medaka Box Abnormal)
Series Composition, Script: Kenta Ihara (Ajin)
Character Design, Chief Animation Director: Yuuji Hosogoshi (Animation Director of Psycho-Pass)
Sub Character Design: Hiromi Taniguchi (Kurage no Shokudou), Takao Maki (Donten ni Warau), Haruhito Takada (One Outs)
Costume Design: Hiromi Taniguchi
Magic Weapon Design: Ebata Ryouma (Chief Animation Director of Mahou Sensou)
Prop Design: You Moriyama (Guilty Crown)
Firearm Design: Hiyori Akishino Denforword (Accessory Settings of Sabagebu!), Nao Ootsu (Mechanical Designer of Punch Line)
Key Animation: Shousuke Ishibashi (Star Driver: Kagayaki no Takuto), Shinichi Kurita (Ga-Rei: Zero), Hiroyuki Horiuchi (Cross Ange: Tenshi to Ryuu no Rondo)
Special Effect Director: Takashii Hashimoto (Kekkai Sensen)
Military Researcher: Reiichirou Oofuji (Design Works of Re-Kan!)
Art Director: Satoru Hirayanagi (Death Parade)
Color Setting: Chiho Nakamura (Speed Grapher)
Director of Photography: Shinji Tonsho (Owari no Seraph: Nagoya Kessen-hen)
3DCG Director: Masato Takahashi (Macross F)
Editing: Yumi Jinguuji (Needless)
Sound Director: Yoshikazu Iwanami (Nejimaki Seirei Senki: Tenkyou no Alderamin)
Music: Shuji Takayama (Overlord)
Theme Song Performance: MYTH & ROID