Lost Notes!

She - a famous high school detective in the past, now studying at a music conservatory. On a quiet night, she accidentally heard a melodious piano sound, but it suddenly disappeared. She picked up the lost student ID card, but found no such person. When she was in doubt, her childhood sweetheart discovered a shocking news: the owner of the student ID card was actually a piano genius who accidentally fell to his death two years ago! She wanted to forget about it, but she kept getting involved. . . . . . Is it a ghost? Or man-made? Strange netizen, no motive for murder can be found. As the case deepens, people around her are involved one by one. . . . . Murder cases occurred one after another, and the mystery was gradually revealed. . . . . ——The love that can never be reached under betrayal. . . . . . . . . . . . Who is watching over lonely love? ...