We have the trailer for the 4th season of the anime Kingdom. According to information from the official website, the anime is produced by Studio Pierrot / St.Signpost.
Check it out:
Therefore, the direction is by Kenichi Imaizumi, character design by Hisashi Abe, and art direction by Yusuke Mizuno.
Synopsis:
The manga revolves around the slave Xin, who despite this dreams of becoming a great general for the state of Qin. Xin helps Ying Zheng, the young King of Qin who shares his desire to unify China, rise to power within the state. Meanwhile, Xin does everything he can to become a top commander of an army capable of defeating the Seven Warring States.
Finally, the new season of the anime Kingdom is coming in the spring.
Via: Official Website