From KNY, Ozaki is a 16-year old Demon Slayer born in Japan in 1896. She has a plain appearance with brown eyes and a black, messy ponytail. She is polite and brave, but is shy around people due to a lack of self-exteem. Her biggest fear is letting her comrades die and plays the violin when stressed. Her parents were killed by a demon resembling a centipede, causing her to develop a dislike centipedes. Her favorite food are candy apples, while being a talented tennis player.