In a quiet rural town, the spotlight of a local junior high school football team rests on one player: Ashito Aoi. Known for his unpredictable moves and self-centered playing style, Ashito is the sole powerhouse pushing his team through an important high school preliminary tournament. However, their win streak is short-lived—an opponent causes Ashito to lose his temper and act violently, resulting in his removal from the rest of the game. Without their star player, the team is quickly eliminated from the tournament. Just as he believes all hope is lost, Ashito is approached by a youth team coach named Tatsuya Fukuda who senses potential in him, and Fukuda invites him for tryouts in Tokyo. In an unfamiliar setting surrounded by talent, Ashito must bring out the best of his ability to prove himself and secure what could be a life-changing career.

In junior high, Ryou Mizushima and his friends join the badminton club on a whim. As he grows fond of the sport, Ryou works tirelessly to improve his badminton skills until he qualifies in the prefectural tournament. Lacking a coach who can bring out his full potential, he does not consider entering a high school with a strong badminton team. Instead, he plans on attending a local high school where he can play badminton for fun. However, Ryou's perspective changes when Yokohama Minato High School's badminton coach scouts him. Not only does the institution have one of the strongest badminton teams in the region, but it also has Kento Yusa, a player Ryou admires. Though hesitant at first, Ryou decides to enroll with the support of his sister. Possessing a firm ambition, he begins to gain experience with the proper guidance of a coach—all in hopes of surpassing Yusa one day.

After finishing their "debut," Kate, Emilico and three other pairs who started with them begin a new life as adults.

Black Cat Cafe is located in the fifth ward of the Imperial Capital. Having lost their purpose after the war ended a few years prior, advanced mechanical dolls known as Automata have been restored and now work at the cafe wearing elegant kimonos. While they adjust to the peaceful world, events of the past continue to haunt the Automata, preventing them from letting go of the responsibility they once held. Among the Automata working at Black Cat Cafe is the recently restored Haizakura, who has lost her memories during a reset. Her identity and role in this unfamiliar world are a mystery to her, but one thing is certain—she loves to sing. With never-ending curiosity and beautiful songs to guide them, Haizakura and the Automata search for their new purpose together, supporting each other no matter how rigorous that endeavor might be.