Eisei, known in Japanese as 嬴政, is a pivotal character from the anime and manga series 'Kingdom'. Eisei is the rightful heir to the throne of the Kingdom of Qin and plays a central role in the series' narrative. His character is driven by a deep desire to unify China, motivated by a vision of ending the era of warring states. Eisei is depicted as a determined and intelligent leader who faces numerous challenges, both political and military, as he attempts to ascend to the throne and realize his dream. His journey is marked by alliances, betrayals, and battles, showcasing his growth as a ruler.