The bustling metropolis of Kansai, where cybernetic screens litter the neon landscape, may seem like a technological utopia at first glance. But in the dark alleys around the brightly-lit buildings, an unforgiving criminal underbelly still exists in the form of fugitives known as "Akudama." No stranger to these individuals, Kansai police begin the countdown to the public execution of an infamous Akudama "Cutthroat," guilty of killing 999 people. However, a mysterious message is sent to several elite Akudama, enlisting them to free Cutthroat for a substantial amount of money. An invisible hand seeks to gather these dangerous personas in one place, ensuring that the execution is well underway to becoming a full-blown bloodbath.

Shoutarou Futaba has always loved sports, but he never became more than a benchwarmer on his middle school baseball team. After noticing a group of gymnasts practicing in the park, he decides to watch a rhythmic gymnastics tournament on a whim. Although displaying an exhilarating performance at the competition, the Shoushukan High School's Rhythmic Gymnastics Club places second-to-last due to penalties acquired from not fielding a full six-man roster. The demonstration of skill captivates Shoutarou, and he decides to enroll at Shoushukan in hopes of joining the team despite having no background in the sport. The club recruits him alongside Ryouya Misato, a prodigal gymnast who was the runner-up in a junior tournament. Now with a full six-man roster, the team sets out to compete in the upcoming Inter-High tournament. As he strives to accomplish this ambitious endeavor, Shoutarou must learn and master the basics of rhythmic gymnastics all while working in tandem with his new teammates if Shoushukan wants to stand a chance at claiming the title.

After reluctantly being dragged to a festival at her parents' rural hometown, Oriko "Okko" Seki must face her sudden harsh reality: the death of both of her parents in a car accident shortly after they arrive. Now, Okko must live at her grandmother's traditional hot springs inn, which she is surprised to find is occupied by the ghost of a barefoot child. He encourages Okko to follow in her grandmother's footsteps and prepare to inherit the inn. Initially, Okko struggles to keep up with the responsibilities of the inn and the accommodation of guests. However, her parents told her that an inn is welcoming for everyone, and she strives to honor their memory. After discovering a few other spirits around the village, Okko learns that even though her parents are gone, she does not have to be lonely.

For the first time ever, the members of Shoushukan High School's Rhythmic Gymnastics Club have qualified for regionals and proceed to set their sights on the Inter-High title. Unbridled excitement permeates the air as the club members prepare and practice their routine, hoping to leave with no regrets, no matter the outcome. Aware that this marks the final tournament for their club's third-year members, the team is more determined than ever to shine the brightest on the competition's biggest stage. However, the pressure of this grand event, on top of some personal troubles, may soon prove too much to handle.