Voice of sin Showa's largest unresolved case (volume 1-3)

Publisher: Kodansha
Author: Souichi Sumoto, Takeshi Shiota
Size: 128mm x 182mm
Number of books: 3
Language: Japanese
Category: Youth manga, manga
Latest publication date: 2018-05-23

Synopsis:
Toshiya Sone, who runs a tailor in Kyoto. One day, he discovered a black leather notebook and a cassette tape from his father's relics. In the notebook, the English sentence is written tightly, and information from a confectionery manufacturer called "Ginga" and "Sanko" is more. The voice of a young child in the tape was exactly the same as the sound of the recording tape used for intimidation in the [Ginga Sanko Incident] that occurred 31 years ago. ―― "This is my voice." Mystery masterpiece approaching the unresolved incident that actually happened !!