Mori Katsuzou Koyasha Nagayoshi

Koyasha is a retainer and general in the Oda Clan. She's also Touko's daughter and the successor to the Mori Family.

Like mother, like daughter, she flies into battle with a psychotic grin on her face. Don't look her in the eyes, or she might decide you are challenging her. Don't expect common sense from her, since her primary pleasure in life is slaughtering her enemies.

Spoiler

In the course of the story, she grows a great deal, though it doesn't change her essential nature at all.