After the end of the large-scale coalition campaign, China has entered an economic recovery phase. The victorious state of Qin is no exception. Despite Ying Zheng and Buwei Lü's political parties continuing their inner conflict in Qin, Zheng enjoys the trust of the people due to his role as king during the coalition battle. However, Lü remains a formidable opponent and plans to disrupt Zhengs coming-of-age ceremony after 18 months. Meanwhile, a Zhao army of 20,000 troops is marching toward Qin. Due to the lack of capable generals in the royal court, Lü suggests that Zheng take command. However, Cheng Jiao, Zhengs half-brother, volunteers instead. As they grew closer during the coalition battle, Zheng now accepts Jiao as his replacement. Nevertheless, just a day after clashing with Jiaos army, the Zhao forces retreat. With tensions rising in Qin, only two men - Bi, commanding 30,000 soldiers, and Xin, leader of the Fei Xin force - can be trusted by Zheng to help him navigate this internal struggle.
Kingdom 4th Season was released on Blu-ray in three volumes from August 26, 2022 to November 25, 2022.
Haku (珀)