You don't even need a pro record for people to know you will be champ. The thing is what you see is what you see, and the kid has speed and is dynamic. Tenshin also has a proven amateur career
A perfect example is Roy Jones. 0-0 record right out of the Olympics people already knew he was gonna be champ because no pro fighter had the same skills as him. Hadn't even won 1 pro fight but everyone knew he was gonna be champ. And he was older than Tenshin
Another example is Jon Jones. 7-0 fought nobodies, no extensive amateur record, but people already called him champ because they can see his striking and compare it to the top fighters. They saw that it wasn't comparable, Jones was way better then the top fighters even though he never fought anyone. What you see is what you see.