The October issue of Ichijinsha’s Monthly Comic Zero-Sum magazine revealed on Wednesday that a manga adaptation of Nanako Tsujimura’s Hōsekisho Richard-shi no Nazo Kantei (The case files of Jeweler Richard or literally, The Mystery Appraisals of Mr. Richard the Jeweler) novel series will launch in January 2020 issue on November 28.
Tsujimura launched the novel series with the first volume in 2015 under the Shueisha Orange Bunko imprint.