After their loss against Suzuridani Academy, the members of the Keishin Academy girls' basketball team—Tomoka Minato, Maho Misawa, Airi Kashii, Hinata Hakamada, and Saki Nagatsuka, along with their coach, Subaru Hasegawa—exert more of their time and effort in improving in the sport day by day. However, this time around, new rivals with strengths possibly exceedings theirs and friends appear on their way to the top.

Subaru Hasegawa has the ambition to become one of the best basketball superstars of all time. However, this comes to an apparent halt when his school's basketball team ceases activities for a year. Shocked by the news, he decides not to involve himself in basketball anymore. One day, his aunt Mihoshi Takamura invites him to coach the Keishin Academy girls’ basketball team on how to play the sport, and he reluctantly agrees. He meets sixth-graders Tomoka Minato, Maho Misawa, Airi Kashii, Hinata Hakamada and Saki Nagatsuki, and begins training them in the sport with one goal: to defeat all strong opponents along the way. Ro-Kyu-Bu! follows the effort of five elementary girls and their coach as they improve their cute style of playing basketball.

A variant of Robin Hood in which all the principal characters are teenagers. Several centuries ago in Nottingham County, a cruel and greedy baron by the name of Alwine ordered the destruction of the Huntingtons' castle—from the fire of which Robin and his cousins, Will, Winifred and Barbara, miraculously escaped. The youngsters sought shelter in Sherwood Forest, where, thanks to the wise guidance of the hermit better known as Friar Tuck, they managed to face the difficulties of a life in the wilderness as as well as they could; however, in the forest there lived a fearless group of young bandits, led by Little John. Their first encounter with Robin and his cousins was at first rather stormy, as the two groups fought for the destiny of a young, noble maiden named Marian who had fallen into the hands of the bandits during an ambush. Their bitterness, however, rapidly lead the way to friendship, and Robin and John later realized they were all victims of the same fate. The youngsters thus mutually decided to help one another. Baron Alwine was not merely enemy of the Huntingtons—in fact, a couple years earlier he had forced Little John and his gang to seek protection in the forest to avoid forced labour. He would later seek Marian Lancaster for the secret carved on a cross the girl wore as symbol of her family line. The girl was to be adopted by the shady Bishop Herfort—Alwine's accomplice—who sought to attain the Lancaster's wealth. With all their strength, Robin and his friends were then compelled to fight against the baron's troops, led by Gilbert—a dangerous and fearless knight. When Winifred and Marian were then imprisoned in the castle's dungeons, our heroes tried in every way possible to enter until their ardour was finally rewarded with success. Thanks to his noble heart and heed for danger, Robin became rapidly known as the protector of the poor and oppressed. Beloved and highly esteemed not only by the villagers, but also and especially by the sweet and beautiful Marian he was. The boy who never parted from his loyal, magical bow, endlessly engaged in dangerous and unthinkable missions.

An ancient legend states that with the revival of the Demon God, six heroes—the Braves of the Six Flowers—will be chosen by the Goddess of Fate, granting them power to rise up against the fiends attempting to turn the world into a living hell. Adlet Mayer, self-proclaimed Strongest Man in the World, has arrived at the continent of Piena in hopes of becoming a Brave. Although it doesn't go as smoothly as he had planned, Adlet is ultimately chosen as one of the six heroes shortly after being greeted by Nashetania Loei Piena Augustra, crown princess and fellow Brave. Rokka no Yuusha follows the two as they embark upon their destined journey to fight the Demon God, intending to meet up with their fellow heroes at a small temple outside of the Land of the Howling Demons, the fiends' domain. However, when they finally unite, seven heroes are present, and soon the others begin to suspect Adlet to be a fraud. Now on the run, Adlet must utilize his unique skill set and wit in a fight for his life to identify which member of the group is the true impostor before it's too late!