Juri Mutou, daughter of a renowned pianist whose career plummeted after her birth, battles suicidal urges stemming from past trauma, despising her mother. Encumbered by a bleak history, Juri's aunt, a clergy member named Monica, arranges a visit to a death row prisoner named Yuu. Yuu, imprisoned for triple homicide and plagued by suicidal tendencies, receives Monica's letters skeptically, interpreting them as pity. Their fateful encounter occurs when Yuu seeks Monica to halt the correspondence, intertwining their destinies in unforeseen ways.