Do you know? Even if you can't write the word "different", you can do it with your intellect! A little stupid boy, Ryuichi Tanaka. The world in which he was transferred to another world was a world of zero intelligence, where humankind became self-degrading due to over-technology in another world, and it became almost impossible to count, read, and write! Ryuichi, who unsealed the "Holy Sword", said, "Counted up to 10", the four demon kings who terrorize people with Michelle, the daughter of a wise man. While fighting, to re-educate the world's people-- !? The "I" world fantasy adventure that unrivals all adversities with the power of wisdom begins!