"Shin Koihime Musō" is a fantasy-comedy anime series that reimagines the historical Chinese novel "Romance of the Three Kingdoms" with a gender-bent and lighthearted twist. Set in a fictionalized version of ancient China, the story revolves around a young noblewoman named Kazuto, who is transported to this alternate world after a mysterious incident. In this world, many of the legendary figures from the Three Kingdoms era are reimagined as women, and the political landscape is rife with conflict and intrigue.

Kazuto encounters a group of bandits led by a spirited and idealistic girl named Ryūbi, who aspires to bring peace to the land. Ryūbi, inspired by the historical figure Liu Bei, is joined by her loyal companions: the stoic and skilled warrior Kan’u (based on Guan Yu) and the cheerful yet fierce Chōhi (based on Zhang Fei). Together, they form a close-knit group dedicated to fighting injustice and protecting the innocent. As they travel, they recruit other notable female warriors and strategists, such as the intelligent and cunning Sonsaku (based on Sun Ce) and the enigmatic and powerful Ryomō (based on Lü Bu).

The narrative blends episodic adventures with an overarching plot, as the group faces various challenges, including rival factions, corrupt officials, and supernatural threats. The series balances action and humor, often incorporating comedic elements and lighthearted interactions between the characters. Despite its comedic tone, the story occasionally delves into themes of loyalty, friendship, and the struggle for a just society. The characters’ relationships and personal growth are central to the narrative, with each member of the group contributing their unique skills and personalities to their shared goals.

Throughout the series, the group’s journey intersects with other historical figures reimagined as women, such as the ambitious and ruthless Sousou (based on Cao Cao) and the wise and compassionate Kada (based on Zhuge Liang). These encounters often lead to alliances, rivalries, and battles that shape the course of their quest. The anime maintains a playful tone while paying homage to the source material, offering a fresh and entertaining take on the classic tale of the Three Kingdoms.