Rich heiress Reiko Hosho lives a double life as a novice detective, fighting crime under Inspector Kazamatsuri—also from a wealthy family. After work, Reiko sheds her pantsuit to don a lovely dress for dinner each day. Difficult cases force her to confide in her butler Kageyama, who proceeds to savagely ridicule her inability to solve mysteries, all while brilliantly unraveling each case himself.
| Title | Time | |
|---|---|---|
| 1 | Welcome to the murderous party File 1 | 2025-04-04 |
| 2 | Welcome to the murderous party File 2 / Here's a message fro | 2025-04-11 |
| 3 | Here's a message from the dead File 2 | 2025-04-18 |
| 4 | Please be aware of two-timing affairs File 1 | 2025-04-25 |
| 5 | Please be aware of two-timing affairs File 2 / The person wh | 2025-05-02 |
| 6 | The person who dropped it is a VTuber File 2 | 2025-05-09 |
| 7 | There is no such thing as a completely locked room File 1 | 2025-05-16 |
| 8 | There is no such thing as a completely locked room File 2 / | 2025-05-23 |
| 9 | Please don't drown in this river File 2 | 2025-05-30 |
| 10 | Murder lies in a beautiful rose | 2025-06-06 |
| 11 | The bride is behind locked doors | 2025-06-13 |
| 12 | What is it that you have lost? | 2025-06-20 |
