Yamamoto 56

Yamamoto 56 (pronounced "Isoroku") is the surviving princess of the fallen Yamamoto house/clan in JAPAN. She wishes to revive her house.

She is one of the best archers throughout JAPAN.

Canonical Isoroku (Sengoku Rance)
The princess of a small clan named Yamamoto. The Yamamoto clan was destroyed by the Ashikaga House. Isoroku's younger brother, Taro, is the only survivor to carry on the clan name, but has been taken hostage by Ashikaga Supergod. For that reason, Isoroku came to serve Ashikaga House.

56 Kichikuou version (Kichikuou Rance, Kaerunyo Kuninyo Alice, Mamanyonyo)
56 is the second daughter of the Yamamoto house in JAPAN. Her biggest wish is to have a son who can carry on the Yamamoto family name. She is an expert of Japanese archery. She was named after the time of her birth.

Trivia
Yamamoto Isoroku is the name of a famous Japanese admiral (male) in World War II.