- One young boy travels through dimensions and explores different times and places
- In each encounter, he observes these different cultures as they endure various challenges
- A collection of stories that explore humanity and instills hope for their future
The manga is made of different short stories linked together by the mysterious boy with no particular name. The boy travels to different times and places, trading with different people and letting them have a glimpse of their future, past or the secret of others, and bets to see if they can change their fate.
| Serialization | Morning Two |
| Published | Mar 1, 2001 to ? |
| Last Updated | June 5, 2017 |
| Other names | A Wonder Boy, 不思議な少年 |
