Richard doesn't solve mysteries, he reads the people trapped inside them. Each gem is a closed diary, and watching him open it without breaking the spine is the entire point. The pacing moves at the speed of genuine conversation, the soundtrack settles into your chest, and by episode three you stop looking for plot and start looking forward to sitting with these two people again. This is comfort television that respects your intelligence enough to make the quiet moments matter more than the answers.

Seigi Nakata is a college student with a strong sense of justice who steps in one night when drunks harass Richard Ranasinghe de Vulpian, a young British jeweler running a small shop in Ginza. Learning Richard's trade, Seigi asks him to appraise a pink sapphire ring his late grandmother kept secret, and the appraisal brings her hidden past to light. Seigi soon takes a part-time job at the store. Together the two handle jewel-related requests from clients of many backgrounds, reading the motives and feelings bound up in each stone to understand the personal stories behind them. Over these quiet mysteries, the bond between Richard and Seigi slowly shifts. Adapted from Nanako Tsujimura's novels, the series blends gentle drama with slice-of-life mystery.