2000 Years Ago There Lived A Man Named Takeda Shingen. Takeda Shingen Is A Fearsome Samurai Often Called As Tiger Of Kai. He Won So Many Battles In His Time. However He Died In A Mysterious Way In 1573. And Now Even Almost 500 Years Have Been Passed Since Then Rumors Says That He Still Lives Threw His Sword And Gained A New Name "Devil Samurai". And Now In 2021 World Has Changed In So Many Ways." CHIKARA" As Well. Chikara Is A Power That Has Been Passed Onto Generation To Generations. However It Differs For Each Human. Some Has Destructive Power Some Has Healing Ability And So On. But There Is A Kid Named "Ikishima Ren" Who Born Without Chikara. He Doesn't Care About It At All. Ren Wants To Live A Peaceful Life. But Life Holds Something Interesting For Him...