Who else is the junior king of volleyball besides Niudao?

At present, only the ox knife is called the king in animation. This title is obtained because Niudao has been advancing to the west of Julia for three years together with Oikawa Tooru. Because Hechuan is king and Niudao is king.

Incidentally, Hechuan is called Wang because Yingshan's nickname is the king of the imperial court. Although it is derogatory, Riri's name is as simple as that, and Hechuan is the predecessor of Yingshan, so Hechuan is the king, and Niudao defeated him, so Niudao is the king.