"Touken Ranbu Kai: Kyoden Moyuru Honnōji" is a historical fantasy anime that blends elements of time travel, action, and drama. The story is set in a world where anthropomorphized swords, known as Touken Danshi, are tasked with protecting history from malevolent forces seeking to alter it. These swords are sentient warriors who take on human forms, each embodying the spirit and history of their blade. Their mission is to travel back in time to pivotal historical moments and prevent the Retrograde Army, a group of time-altering enemies, from disrupting the timeline.

The narrative centers on the Honnōji Incident, a critical event in Japanese history where the warlord Oda Nobunaga met his end. The Touken Danshi are dispatched to this era to safeguard the timeline and ensure the incident unfolds as it should. The series explores the challenges they face as they navigate the complexities of historical events, balancing their duty to protect history with their personal struggles and relationships. Key characters include Mikazuki Munechika, a calm and elegant sword with a deep sense of duty; Kogitsunemaru, a fox-like warrior with a playful yet serious demeanor; and Yamanbagiri Kunihiro, a reserved and introspective sword who grapples with his identity.

As the story progresses, the Touken Danshi confront not only the Retrograde Army but also their own internal conflicts and the weight of their historical significance. The series delves into themes of loyalty, identity, and the consequences of altering history, all while maintaining a focus on the camaraderie and growth of the characters. The Honnōji Incident serves as a backdrop for both action-packed battles and poignant moments of reflection, creating a narrative that intertwines historical intrigue with personal drama.