A mysterious power dwells in in the crystal held by Amachi Akira, a boy who's well-versed in stones. Using that power, he goes on to solve many cases, but he eventually ends up finding himself involved into a great conspiracy!! This is a miraculous story of saving the world with the power of "stones"!
Taiga Hiiragi, a delinquent, lived a life consumed by daily brawls. One day, Noel, a genius slime reincarnated from another world, appears before him. When Taiga finds himself in a pinch during a fight, Noel uses his intellect to help him out. Then Noel declares to Taiga, "Slimes and Yankees(delinquents) should go to Tokyo University!!" Noel claims he's here to help Taiga pass the Tokyo University entrance exam, but?
