Overview
When Keita frees Whisper, a ghost-like yōkai, from 190 years of imprisonment, Whisper pledges to protect Keita from supernatural dangers. Whisper also gives Keita a watch that allows Keita to see other yōkai. Together with the twin-tailed cat spirit Jibanyan, they encounter lots of yōkai-related problems and solve them.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 25 | 35 | |
 | 43 | 53 | |
 | 44 | 54 | |
 | 23 | 33 | |
 | - | - | |
 | 30 | 40 | |
 | 31 | 41 | |
 | 48 | 58 | |
 | 32 | 42 | |
 | 41 | 51 |