Sannose Ninose possesses distinctive purple hair and lilac eyes. She stands at 155 centimeters tall and weighs 48 kilograms. Her birth date is October 12, placing her under the Libra zodiac sign, and her blood type is A.

Professionally, she works as a manga artist. Within a documented storyline, she hires the protagonist to serve as her assistant. During one of their collaborative work sessions, this assistant makes a specific request to view her breasts, justifying it as necessary anatomical reference material for accurately drawing a character.