During a race, mountain bike (MTB) enthusiast Shou Yamato is mysteriously dragged into another world alongside his friends, Kakeru and Makoto. Soon, the group discovers that this world known as X-Zone revolves around Idaten battles—MTB races characterized by special courses, rules, and hidden powers lying dormant within the bikes. The only way to return home is to win and obtain the MTB emblems from the defeated challengers. Despite being perplexed and terrified of the bizarre world, Shou is surprisingly excited. He has the opportunity to compete with fellow MTB riders, make new friends and rivals, and also unearth the X-Zone's hidden truths that may dramatically change his fate. Shou and his friends must make it through an arduous journey, one rife with conspiracies against them, in order to safely return home together.

School begins at Étoile Vio School, where idol-hopeful students known as I-Chu will undergo training to become full-fledged idols. However, things are off to a strange start when the new students are given a speech from their bear principal?! The I-Chu work steadily toward their goals and ask, What is an idol? Each boy will learn to shine as they struggle to find their answer. (Source: MAL News)

The story focuses on Yui, a girl who lives in the town of Paparajuku, and who dreams of being an idol, even if she realizes that being an idol is next to impossible for her. Her friends often remark on how much she dreams about it. But then, the PriPara idol theme park opens in her town, and that an idol named Laala is coming to town from Parajuku, which only makes Yui dream even bigger. The new PriPara theme park has been updated with new concepts. However, due to a system error, Laala is no longer able to PriPara Change. (Source: ANN)

The story of Idol Memories is set in the near future, where live idol music performances in virtual reality have become commonplace. Against this backdrop, a pair of rival idol groups compete for the coveted tiara, which represents the number one spot in the Idol League. (Source: Crunchyroll)