1: A Lost Soul.

In a religious academy, a teenager with a golden voice chooses her dream over anything else after her soft heart was shattered by hatred. That was until she met Sunoo Kim, a fragment of the school's past, lingering around the halls without leaving a trace, not even a shadow left on the dusty grounds. And ever since they met, the skeletons in the school's many closets began to crawl their way out. - But is it for the better? Or for worse?