Ogura Shio

Japanese name:	小椋 しお
Nickname:	Nobunagun

Shio Ogura also known as Nobunagun, is a Japanese high school student visiting Taiwan on a school trip when she is suddenly attacked by monsters. In a world where people called E-Gene Holder agents have the power to wield weapons infused with the spirits of great historical figures, Shio awakens the ability to wield one such weapon. She then controls the great Japanese warlord Oda Nobunaga as a giant machine gun!

Nobunagun Wiki