This is Adon アドン The Rising Jaguar of Muay Tha

[LiangHuBBB]

Adon was born from a poor family in Thailand. When he was five years old, his father took him to the Khmer Ruins for the first time, where many fighters challenged the Muay Thai Emperor Nuakan, his father included.

None of them managed to defeat him. Adon then wished to grow stronger and one day challenge Nuakan. Some years later, a young man named Sagat managed to defeat Nuakan, and Adon was impressed with their intense battle.
A few years later, Adon asked Sagat to make him his disciple.

Adon is a former pupil of Sagat, seeking to surpass his disgraced master and become the Emperor of Muay Thai.
One day Adon challenges Sagat for the title of "God of Muay Thai" and defeats him.

https://www.youtube.com/watch?v=_0opvlp2nbQ