Complex sentence: In late medieval Japan, Kai is a half-Japanese, half-English outcast who lives in the domain of Ako, ruled by the benevolent Lord Asano Naganori, who found a young Kai lost in the forest and accepted him into his household.
Split into simpler sentences: In late medieval Japan, Kai is a half-Japanese, half-English outcast who lives in the Ako domain, which is ruled by the benevolent Lord Asano Naganori. Asano found a young Kai lost in the forest and accepted him into his household.