Once upon a time, there was a girl named “Sora”. She loved to sing, but one day, something happened that made her scared to sing in front of others. As days passed, she forgot how to sing, and even how to laugh. Then, one day, she and her little brother “Daichi” stumbled upon a mysterious pond.

At a pond called “Kagamiike”: Mirror Pond, Sora discovered a mystical butterfly glowing with aurora colors. As she watched it flutter freely, she suddenly felt a connection. The butterfly’s magical glow seemed to resonate with something deep inside her. Unable to resist, Sora reached out toward the butterfly. But she lost her balance and tumbled headfirst into the pond. Daichi, trying to help her, ended up falling in too...

Beyond the surface of the Mirror Pond, a world of wonder and mystery awaited. As Sora and Daichi stared in amazement, a quirky girl named “Rococo” appeared before them. Before long, the three of them set off on an adventure through “The Land of NOMO”. Along the way, Sora begins to face the many feelings she had kept hidden deep within her heart.