What nationality is this group?

The teacher's real name is Yang Xiaobao. The voice of Jin in the concave-convex world is: Tekilen (group) (male) and the enemy. Kakihara Tetsuya (male) (Japanese version).

The protagonist Jin and his derivative works in the domestic animation "Bump World".

This group of people come from the mining planet Denglu, and bear heavy hard labor and taxes under the will of God. In order to change the fate of the planet, my sister Qiu took part in the concave-convex contest three years ago and never returned. In order to find her sister and change the fate of her hometown planet, Jin found the path her sister had taken when she grew up and set foot on the journey of the concave-convex contest again.