"Hyakka Ryōran Samurai Girls: Otome Ureshi Hazukashi Shōshi no Chigiri" is a continuation of the "Hyakka Ryōran Samurai Girls" series, blending historical fantasy, action, and harem elements. The story is set in an alternate version of Japan where the Tokugawa shogunate remains in power, and the nation is protected by a group of female warriors known as the Master Samurai. These warriors are bound to their male masters through a ritual called the "kiss of the oath," which grants them enhanced abilities.

The protagonist, Muneakira Yagyu, is a skilled swordsman and the heir to the Yagyu clan. He becomes the master of several Master Samurai, including Jubei Yagyu, a legendary warrior reincarnated as a young girl. Jubei, along with other Master Samurai such as Yukimura Sanada and Matabei Goto, forms a close-knit group dedicated to protecting Japan from various threats. The series explores their battles against rival factions, supernatural entities, and political conspiracies that threaten the stability of the Tokugawa regime.

The narrative delves into the relationships between Muneakira and the Master Samurai, emphasizing themes of loyalty, duty, and camaraderie. Each character has a distinct personality and background, contributing to the dynamic interactions within the group. The series also incorporates elements of Japanese history and mythology, reimagining historical figures and events within its fantastical framework.

As the story progresses, the characters face increasingly formidable adversaries, testing their resolve and abilities. The series balances action-packed sequences with moments of humor and lightheartedness, creating a blend of intensity and charm. The overarching plot revolves around the Master Samurai's efforts to uphold justice and protect their homeland, culminating in a climactic confrontation that determines the fate of Japan.

The series maintains a focus on character development, exploring the personal struggles and growth of the Master Samurai as they navigate their roles and relationships. The interplay between historical inspiration and creative liberties results in a unique narrative that appeals to fans of action, fantasy, and harem genres.