Synopsis
Hiro is a high school student with a powerful love for adventure. According to local legend, something truly remarkable is hidden somewhere around his hometown—the only challenges are figuring out what it is and where to locate it. After he discovers a book filled with strange writing in the college library, he enlists his friend Puri to decipher it. She concludes that there is indeed a legend about a hero and his companions joining forces to find a magical cave. Meanwhile, a young woman named Fauna suffers from an unusual condition that makes her uncontrollably crave sex while sleepwalking. Because of the dangers this could expose her to, she and her friends grow worried enough to consider a local superstition. It is said that a flower exists which can cure any ailment, and if that is true, it might be the answer to Fauna's troubles. Neither group in Rhythm: Koi no Rhythm realizes that their separate quests are actually one and the same, and where they intersect will lead them on an adventure none of them will ever forget.