The Case Files of Jeweler Richard Novel Volume 4 was written by Nanako Tsujimura with illustrations by Utako Yukihiro.

Richard suddenly closes Jewelry Étranger and vanishes, leaving Seigi stunned and alone. Acting on information from Saul, Seigi makes his way to England in pursuit of his wayward boss. When the beautiful jeweler’s tortured past comes back to haunt him, what’s his knight in shining armor to do?!