Arata Natsume, a single man in his thirties employed at a child guidance center, leads a quiet life until a former charge, Takuto, approaches him with a chilling plea to confront his father's murderer. This request unravels a dark connection to the notorious serial killer Shinagawa Shinju, infamously dubbed the 'Shinagawa Pierrot'. Recognized for its compelling narrative, this manga was nominated for the Tsugimanga 2020 Award in the Manga Category.