At a prestigious academy called Ryuuguu Elementary School, numerous famous masterwork characters have been cultivated. One day, an ordinary boy named Meisaku Matsuda transfers into this notable institution. Little does he know, Ryuuguu Elementary is packed with peculiar individuals like Sweets, a wildly energetic mischief-maker; Musubi, a short-fused rice ball who resents being referred to as "onigiri"; Nokio, a conceited self-declared robot; and Bolt, who claims speed beyond that of a rabbit. Surrounded by such extraordinary classmates, can Meisaku manage to graduate as a distinguished masterwork character?