His father.
In the video you can see a coach of the opposite team pushing his father away at a meeting and that alone gave him all the motivation he needed to punish and destroy his opponent.
I was going to write it's great to see young people changing the boxing scene, then I looked him up and he is only a few years younger than me. He had 30 fights, not a single loss, and 27 of those won by knockout. His father did a great job.