The Mythical Beast Series (神話 獣 シリーズ, Shinwa Kemono Shirīzu) is a series containing four exclusive Cursed Gears produced after the creation of the Yin-Yang Spirit Series. They were handed down to the heirs of the serving families of the Todo Family.
As aforementioned, this series contains four demons.
Main article: Aodoryū
A battle-axe type of Cursed Gear contracted to Sergeant Kanata Kihagi. It allows the user to summon earthly familiars and release a long range attack named Ground Pursuit.
Main article: Shiroraitora
A dagger type of Cursed Gear contracted to Sergeant Hinata Kihagi. It allows the user to control lightning as well as teleport the user wherever the dagger is thrown.
Main article: Shukahō
A katana type of Cursed Gear contracted to First Lieutenant Taito Akafuji. It allows the user to manipulate fire and it was the special ability named Crimson Haze that gives the foes an illusion that they are burning in molten lava.
Main article: Seisuibu
A lance type of Cursed Gear contracted to Second Lieutenant Yukina Aoyagi. It allows the user to manipulate water and have the special ability named Water Cage that traps foes in a bubble and drowns them from within.