Overview
Kei Watanabe is a fifth grade elementary school student. He has inherited the hunter's blood to hunt yōkai. To save the world from being destroyed, Kei Watanabe challenges a war against the yōkai.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 13 | 17 | |
 | 23 | 27 | |
 | 8 | 12 | |
 | 47 | 51 | |
 | 51 | 56 | |
 | 35 | 39 | |
 | 46 | 51 | |
 | 35 | 39 | |
 | 32 | 36 | |
 | 27 | 31 |