To the anime adaptation of "Kingdom" (キングダム) based on the original work by Hara Yasuhisa, six summary videos have now been released. These provide a comprehensive overview of the first five seasons of the series.

The compiled content covers more than 100 episodes, beginning with the first encounter between Xin and Zheng and the heroic deeds of General Wang Qi. They extend to the intense military conflicts between the states of Qin and Zhao in the fifth season. The first season is summarized in two videos, while each of the following seasons is presented in one video each.

"Kingdom" is set in China during the Spring and Autumn period and the Warring States period. The plot focuses on the boy Xin, who dreams of becoming a great general, and Ying Zheng, the later first emperor of China. The sixth season shows Xin's deployment as a member of the Qin army under Zheng's leadership in the fight against the enemy state Zhao.