At the request of his father, tennis prodigy Ryouma Echizen has returned from America and is ready to take the Japanese tennis scene by storm. Aiming to become the best tennis player in the country, he enrolls in Seishun Academy—home to one of the best middle school tennis teams in Japan. After Ryouma catches the captain's eye, he finds himself playing for a spot on the starting lineup in the intra-school ranking matches despite only being a freshman. Due to his age, the rest of the Seishun Boys' Tennis Team are initially reluctant to accept him, but his skill and determination convinces them to let him in. Armed with their new "super rookie," Seishun sets out to claim a spot in the National Tournament, hoping to take the coveted title for themselves. In order to do so, the team must qualify by playing through the Tokyo Prefectural and Kanto Regionals. Yet, the road ahead of them is shared by a plethora of strong schools, each playing tennis in unique ways for their own reasons. Ryouma and his teammates must learn to cooperate if they want to become the champions they aspire to be. [Written by MAL Rewrite]

Chihaya Ayase, a strong-willed and tomboyish girl, grows up under the shadow of her older sister. With no dreams of her own, she is contented with her share in life till she meets Arata Wataya. The quiet transfer student in her elementary class introduces her to competitive karuta, a physically and mentally demanding card game inspired by the classic Japanese anthology of Hundred Poets. Captivated by Arata's passion for the game and inspired by the possibility of becoming the best in Japan, Chihaya quickly falls in love with the world of karuta. Along with the prodigy Arata and her haughty but hard-working friend Taichi Mashima, she joins the local Shiranami Society. The trio spends their idyllic childhood days playing together, until circumstances split them up. Now in high school, Chihaya has grown into a karuta freak. She aims to establish the Municipal Mizusawa High Competitive Karuta Club, setting her sights on the national championship at Omi Jingu. Reunited with the now indifferent Taichi, Chihaya's dream of establishing a karuta team is only one step away from becoming true: she must bring together members with a passion for the game that matches her own. [Written by MAL Rewrite]

With the Interhigh Championship finally over, Seirin's basketball team refocuses their efforts, training harder than ever to get the chance to participate in the Winter Cup. Both Kuroko and Kagami see old friends walk back into their lives, providing a challenge both on and off the court. As new skills are developed and new alliances created, enemies from various teams—giants of high school basketball such as Yousen, Shuutoku and Touou—stand in the way of Seirin's steadfast attempts to get to the top. All of these schools prove to be formidable foes whose abilities progress exponentially, while Kuroko struggles to find a balance between his resolve to play as part of a team and his desire to win. With old wounds reopening, new challenges to face on the court, and a new set of foes—the "Uncrowned Kings"—vowing to defeat the new hopefuls, will Seirin ever be able to achieve their dream of beating the Generation of Miracles? [Written by MAL Rewrite]