Synopsis

In the dusty recesses of an old school storage shed, a startling discovery is made: the skeleton of a ten-year-old boy. A cryptic message is etched upon a headband clutched in the skeletal hand, sparking an immediate investigation. The students of the class, aided by their homeroom teacher Wakasa, find a faded class schedule within the shed – a vital piece to unlocking the puzzle. This schedule holds the key to a complex code, one inextricably linked to a long-forgotten case. Ten years pri