| Clue | Source | Date |
|---|---|---|
| Emperors brush up outside a party | ||
| Onetime Japanese emperors | LA Times Daily | 10 Nov 2020 |
| Onetime Japanese emperors | The Washington Post | 10 Nov 2020 |
| Titles for Japanese emperors | Universal | 12 Dec 2018 |
| Titles for Japanese emperors | ||
| Japanese imperial titles | Universal | 10 Dec 2017 |
| Japanese imperial titles | ||
| Old Japanese emperors | ||
| Japanese imperial titles | ||
| Japanese emperors | ||
| Japanese emperors' titles | ||
| Japanese imperial titles | ||
| Japanese imperial titles |