Housekishou Richard-shi no Nazo Kantei

Synopsis
Follows Richard Ranashinha Dvorpian, a handsome British jewelry appraiser, and Seigi Nakata, a bright and upright Japanese college student. The duo solves various jewel-related cases by unraveling the hidden psychological aspects of their owners that lie within the gems. (Source: MAL News)
Background
Housekishou Richard-shi no Nazo Kantei has been published in English as The Case Files of Jeweler Richard by Seven Seas Entertainment since March 8, 2022.