"Sakura Kakumei ~Hana Saku Otome-tachi~" is set in an alternate version of Japan during the Taisho era, where historical events and supernatural elements intertwine. The story revolves around a group of young women who are part of an elite military unit known as the "Flower Division." These women are tasked with protecting the capital from mysterious threats known as "Kouma," supernatural entities that emerge from the shadows to wreak havoc. The Flower Division operates under the Imperial Combat Revue, a government-sanctioned organization that combines traditional combat techniques with advanced technology.

The protagonist, Sakura Amamiya, is a spirited and determined young woman who joins the Flower Division after her hometown is attacked by Kouma. She possesses a unique ability to summon and control a powerful spirit known as a "Star," which grants her enhanced combat capabilities. Alongside Sakura, the team includes other skilled fighters, each with their own distinct personalities and abilities. These characters include Sumire Kanzaki, a disciplined and stoic swordswoman; Hatsuho Shinonome, a cheerful and energetic fighter with a strong sense of justice; and Claris, a reserved and intellectual member who specializes in strategy and support.

As the series progresses, the Flower Division faces increasingly dangerous Kouma threats, uncovering a deeper conspiracy tied to the origins of these entities. The narrative explores themes of camaraderie, sacrifice, and the struggle to protect one's homeland. The characters' personal growth and relationships are central to the story, as they navigate the challenges of their missions while confronting their own fears and insecurities. The series balances action-packed battles with moments of emotional depth, creating a compelling narrative that keeps viewers engaged.

The setting is richly detailed, blending historical elements of the Taisho era with fantastical and steampunk-inspired aesthetics. The integration of traditional Japanese culture with advanced technology adds a unique flavor to the world-building. The series also delves into the political and social dynamics of the time, highlighting the tensions between tradition and progress, as well as the impact of war and conflict on society.

Overall, "Sakura Kakumei ~Hana Saku Otome-tachi~" offers a mix of action, drama, and supernatural intrigue, anchored by a diverse cast of characters and a richly imagined historical-fantasy setting. The story's focus on teamwork, resilience, and the fight against overwhelming odds makes it a compelling watch for fans of the genre.