Constantly outperformed by the girls' club, the boys' soft tennis club faces disbandment due to their poor skills and lack of positive results in matches. In desperate need of members, Touma Shinjou is looking to recruit capable players, but he fails to scout anyone. Enter Maki Katsuragi, a new transfer student who demonstrates great reflexes when he catches a stray cat in his classroom, instantly capturing Touma's attention. With his interest piqued, Touma ambitiously asks Maki to join the boys' team but is quickly rejected, as Maki doesn't wish to join any clubs. Touma refuses to back down and ends up persuading Maki—only under the condition that Touma will pay him for his participation and cover other club expenses. Maki joins the team, and his incredible form and quick learning allow him to immediately outshine the rest of the team. Although this gives rise to conflict among the boys, Maki challenges and pushes his fellow team members to not only keep up with his seemingly natural talent, but also drive them to devote themselves to the game they once neglected. As the members of the boys' soft tennis club discover their own capabilities, they endure personal hardships and deal with the darker side of growing up in middle school.

The Mutou family leads a peaceful life: Kouichirou works at a construction site and his wife Mari is returning from an overseas trip. Their daughter Ayumu has just finished her track practice while their son Gou is playing video games at home. However, life as they know it is flipped upside down when a calamitous earthquake strikes the entire Japanese archipelago—obliterating the face of the country in an instant. With society crumbling around them and their nation gradually sinking into the ocean, the Mutou family must band together to survive the catastrophe. Treading the near-apocalyptic setting, they struggle not only to stay alive, but also to learn the difficulty of coping with loss.

After failing their boss for the last time, yakuza members Kentarou, Ryou, and Kazuhiko are faced with one of two choices: have their organs harvested and sold or take a trip to Thailand for sex reassignment surgery and become pop idols. Now, after a year of excruciating training, the three thugs have been reborn as Airi, Chika, and Mari. Debuting as the amateur idol group The Goku Dolls, the three strive towards becoming top idols. However, despite the hours of feminizing brainwashing they were forced to endure, the three idols have managed to keep the yakuza spirit alive in their hearts. In order to fix this, their yakuza boss hires Mandarin Kinoshita, a legendary manager who has never had an idol group fail under his management. With their lives now on the line, the reluctant yakuza must work with their new manager to unleash their inner cuteness and become the successful idols that their tyrannical boss can truly be proud of.

In the year 5053, French aristocrats Viscount Albert de Morcerf and Baron Franz d'Epinay attend the festival of Carnival on the moon city of Luna. While Franz is just looking to have fun, Albert is seeking something more to fill his life—but he finds more than he bargained for in The Count of Monte Cristo, a mysterious and charming self-made nobleman who meets his gaze during an opera performance. Through a few twists and turns, Albert befriends the Count and introduces him into French society. The Count, however, has more on his mind than just friendship; he plots to finally unleash his vengeance on those who wronged him years earlier. Gankutsuou follows Albert and the Count's intertwined destinies and the ultimate price paid for enacting revenge.