Ninja Girl & Samurai Master

Oda Nobunaga saves a girl from drowning one day. She clumsily tells him that she's a shinobi. Instead of attempting to kill him, she swears to serve him one day after hearing his plans to unify Japan.

Chidori, the Iga shinobi, may only be a child, but was already a skilled shinobi. One day, her master gets a request from Oda Nobunaga to send some shinobi to work for him. Chidori is picked to go, and...

While at Oda's castle, a man called Saru, whose name is actually Kinoshita Hideyoshi, appears before her. He keeps bugging her to him ninja techniques and another Oda subordinate, Mori Yoshinari, who is a master of the spear, asks her to spar with him. What does Chidori do?

Nobunaga's first mission for Chidori is to go find out information about Imagawa Yoshimoto's plans to infiltrate Owari. That night, Chidori successfully infiltrates Imagawa's mansion and...

Chidori and Sukezo go to visit Hideyoshi, who has gotten sick. While they're there, Hideyoshi's friend, Nene, barges in. It seems that Nene secretly has feelings for Hideyoshi, but Hideyoshi likes Nobunaga's younger sister, Oichi.

Imagawa Yoshimoto starts his invasion of Owari. Nobunaga's army was panicking, but Nobunaga was calm for some reason. Meanwhile, Chidori was doing an important mission for Nobunaga.