Housekishou Richard-Shi No Nazo Kantei

Housekishou Richard-Shi No Nazo Kantei summary:

The story 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.