The Land of NOMO

Nomo no Kuni · ノモの国

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. (Source: Official site, translated)