Kaede Soga is a 23-year-old university instructor teaching Ryuichi Moroboshi. She lives in the same boarding house as Ryuichi after his move. Standing 158 cm tall with a slim build and pale skin, her measurements are 84-57-86 cm, featuring medium breasts. She has short, straight violet hair styled with spiky bangs and curtained sides parted in the middle, along with green eyes. Kaede typically wears glasses and an outfit consisting of a lab coat over a sleeveless turtleneck sweater, pantyhose (sometimes depicted as torn), court shoes, and gloves. Personality-wise, Kaede presents as reserved, serious, and somewhat strange, often perceived as a quiet bookworm with limited conversation. She exhibits curiosity, intelligence, and workaholic tendencies. Despite an outwardly reliable appearance, she displays clumsiness and inattentiveness to her surroundings. Her serious nature prevents her from admitting defeat. Notably, her typically reserved personality undergoes changes during intimate interactions. Within the boarding house dynamic involving multiple female residents and Ryuichi, she participates in sexual activities alongside the other housemates. Her role extends beyond being Ryuichi's university teacher to becoming his roommate within the shared boarding house.