When Aria wakes up in a strange, ancient land with no memory of how she arrived, she is guided by the hauntingly beautiful voice of a mysterious woman. As Aria unravels the secrets of this forgotten world, she encounters a love that transcends time itself. Amidst cryptic warnings and imminent danger, Aria must navigate her own growing feelings and encover a romance that could change everything. Meanwhile, In the school library's dimlight and scent of old paperwork, she discovers old handwritten letters which have a sense of connected romance to her present life. Originated from a place where time is fluid and destiny is uncertain, can love find the ways through the shadows?