Muramasa Senju

She mostly always wear her Kimono everywhere she goes, from the trip to the publisher's to the gang's trip to the beach. She has a timid personality, although this seemingly cold state has been broken many times.

A fellow light novel writer with Masamune, although she is much more successful than him. She is left handed and prefers writing her manuscripts by hand rather than by computers. People pass around rumors that Masamune had copied her writing style.