Sanami Murakami, born June 27th (Cancer), stands 155 cm tall and weighs 52 kg with blood type O. She possesses blue eyes and dark gray hair styled in a chest-length braid, frequently depicted wearing glasses.

An avid reader often situated in a library, Sanami tends to downplay her physical attributes. When directly asked to show her breasts by another character, she deflects, referring to them as "lubber" and initially asserting they are unremarkable or not worth viewing. During this interaction, straightening her back accidentally places strain on her clothing, resulting in her bra and blouse bursting open and causing unintended exposure.