Matsu is a supporting character in the anime series set during the Sengoku period. She is a kunoichi, a female ninja, who serves under the warlord Oda Nobunaga alongside the main protagonist, Chidori. Matsu is depicted as a slender young woman with long black hair often styled in braids and a traditional ninja outfit that includes a mask covering part of her face. Her background ties her to the Iga ninja clan, and she is a skilled member of Chidori’s team.

In terms of personality, Matsu is initially reserved and cautious, in contrast to the more impulsive Chidori. She is highly intelligent, sharp-witted, and resourceful, often applying creative solutions to problems encountered during missions. As the story progresses, she becomes more outgoing and reveals a playful side, enjoying lighthearted teasing of her friends. Her motivations are rooted in loyalty to Nobunaga and a strong sense of duty to her comrades, which drives her to perform her ninja tasks with dedication.

Matsu’s role within the story is that of a reliable support ninja who complements Chidori’s abilities. She provides strategic thinking, stealth, and combat backup during operations. Her key relationship is with Chidori, whom she regards as a close friend and ally. She also interacts regularly with other retainers and allies of Nobunaga, such as Sukezou and the various historical figures that appear. Her development over the series is marked by a shift from a guarded, cautious operative to a more confident and sociable individual, while still maintaining her core professionalism.

Notable abilities include exceptional stealth, impressive agility and speed, and proficiency in both unarmed and weapon-based combat. She is also a capable problem solver, able to assess situations quickly and adapt her tactics on the fly. Her ninja gear and training make her an invaluable asset in intelligence gathering and covert operations.