Taro, a local policeman stationed at a police box for 20 years has penetrating insight that caught the attention of Reiko, the chief of the investigation at Kyoto Prefectural Police. She promotes him to a detective. He is very sharp and his analytic mind excels him in his power of detection that enables him to pinpoint the culprit. But he is very fat, and that gives everyone the impression of his being "a jolly-good guy". Such first-site impression gives him advantage to cut directly into the heart of the matter and pursue the culprit from a unique viewpoint.
