Yanna Sasatsu is a 17-year-old second-year student at Tagane High School who presides over the Photography Club. Originally from Mie Prefecture, she sports striking red hair and eyes, typically wearing her school uniform layered with a cardigan. Her leadership style is notably relaxed—she admits members without stringent requirements and offers little critique on their photography. Outside club duties, she enjoys frequent naps in the clubroom and singing karaoke. Her mother is Anna Sasatsu. Yanna mainly interacts with fellow club members, including her initial meeting with Kaito Jin when he discovered her napping in the clubroom.