One night, a college student with a strong sense of justice, Seigi Nakata, saved a gorgeous foreigner, Richard, who was being harassed by some drunks. When Seigi found out that Richard was a jeweler, he asked for an appraisal on a ring with a shady history; one which his grandmother had kept secret until she died. The appraisal had revealed her past, truth, and desire. It led Seigi to work as a part-time employee for Richard's jewelry store, the "Jewelry Etranger" in Ginza. While solving various "mysteries", the relationship between Richard and Seigi gradually changes.
| Title | Time | |
|---|---|---|
| 1 | Seigi of the Pink Sapphire | 2020-01-09 |
| 2 | The Ruby's Truth | 2020-01-16 |
| 3 | Insight of the Cat's Eye | 2020-01-23 |
| 4 | The Fighting Garnet | 2020-01-30 |
| 5 | Opal of Encounters | 2020-02-06 |
| 6 | Perilous Turquoise | 2020-02-13 |
| 7 | The Jade of Succession | 2020-02-20 |
| 8 | The Angel's Aquamarine | 2020-02-27 |
| 9 | The Alexandrite's Secret | 2020-03-05 |
| 10 | The Lapis Lazuli of Guidance | 2020-03-12 |
| 11 | Peridot of Blessings | 2020-03-19 |
| 12 | Tanzanite of Rebirth | 2020-03-26 |
