In the world of Japanese ping pong, a mighty king has fallen. An underdog team suddenly breaks the indomitable Oudou Academy's nine year winning streak, creating a power vacuum as players everywhere are given hope that they too can reach the national tournament. Suzumegahara Middle School is home to a small-time team: Hanabi Tenka, who has a rapid attack style; Hokuto Itsumo, who can predict the ball's most likely path; Agari Kamiya, famous for her signature backhand smash; vice-captain Mune Oomune, who has an aggressive playstyle; and team captain Kiruka Ushirode, who possesses an impenetrable defense. Despite their skill at ping pong, the team has never made it further than the local city tournaments. But everything changes when transfer student Koyori Tsumujikaze arrives in town. Filled with an intense love of the game, she quickly makes a name for herself as another top player on the team. Koyori's positive attitude towards ping pong lights a fire in each of the girls' competitive hearts, and together they embark on a mission to win the national tournament. [Written by MAL Rewrite]

A floating space without gravity where an infinite number of lights shine in different colors: The "Box of Wisdom." Inside of this box, there are multiple worlds, multiple timelines, and there used to be many different people. This is where Dual and Dorothy were fighting with enemies called "Viruses." Worlds infected by viruses must be erased. That is the duty, the job of these girls. However, one day, Dual and Dorothy feel the presence of a new Virus. Arriving at the scene, they see a girl being attacked by Viruses. After saving the girl, the duo wait for her to awaken so they can ask who she is, where she came from, and where she is going. Finally, when the girl opened her eyes, she gave her name, Rimo, and whispered only one sentence... "I must return to the flower patch..." (Source: ANN)

Shou and his friend, Tetsurou, stumble upon a strange orb-like mechanism, the Guyver Unit, in the woods. It physically bonds with Shou and turns him into the alien soldier, Guyver. His mission is to protect the Guyver Unit from the Japanese corporation known as Chronos. They are after it and two other units just like it. To retrieve the object, they send out vicious monsters known as Zoanoids. So no one is safe in Shou's life; not even himself.

At Maigahara Music College Affiliate School Maigahara Senior High (abbreviated as MaiMai) that gathers the most promising musical talents, there's a rumor circulating among students. "If you give an amazing performance at the school festival, you get special extra credit (or so they say)." Serina's grades are not very good, so she immediately believes the rumor and decides to form a band.