Amazon Slayer S1 The Awaken.

( in this world Humans have fear the Demons creatures of the night that Eat and kill humans and drink blood but there's another Race that is neither Human nor Demon this third is Race are called Amazons Amazons are Humanoid organisms born by a deadly Cells called Amazon Cells and They can Take on Human Forms and they more deadly and powerful then Demons and unlike Demons they can't die in sunlight and they have these things on their left Arms called Amazon Register ( or know as Amazon Arm Bracelet) The Amazon Register is an armlet like item every Amazons' left arms. As a control device, its function is to inject drugs regularly into the Amazons' bodies to suppress the awakening of the Amazons and the Amazon Cell. The Drugs last 2 years but if it runs out and The Blue Eyes on the Amazon Register will change to Red and The Amazon Cell fully Awaken then there's no going back but there's two Amazons who are not part of the experiment Amazons and these two are no ordinary Amazons they are Amazon Riders and Use These Belts called Amazon Drivers to control their transformation and the The Two Amazon Riders are ... Amazon Alpha and Amazon Omega)

( Tanjiro Kamado will Be Kamen Rider Amazon Omega and will be a third type of Amazon By genetically modifying Amazon Cells to include human DNA, created a new type of organism, Tanjiro, who is neither purely human nor Amazon like Haruka Mizusawa he will protect everyone even if their Humans or Demons or Amazons.

Sanemi Shinazugawa will be Kamen Rider Amazon Alpha and like Jin Takayama he will vowed to personally wipe each and every remaining Amazons off the face of the Earth. In order to do that, he injected Amazon Cells into his own body to become stronger, becoming Amazon Alpha. And not only hr will Wipe all Amazons off but Demons too.

And The Demon Slayers will not only hunt Demons but Amazons too.

And Nezuko Kamado dose not become a Demon but Tanjiro will manged to save her )