Nemuri Kayama, professionally known as Midnight, is a Pro Hero and a faculty member at U.A. High School, where she teaches Modern Hero Art History while also serving as one of the school's most experienced instructors. Known for her confidence, charisma, and theatrical presence, she balances her glamorous public image with genuine professionalism and a strong commitment to educating the next generation of heroes. Midnight is a tall, attractive woman with pale skin, long dark purple hair, and striking blue eyes. Her hero costume is inspired by a dominatrix aesthetic, featuring a black bodysuit, thigh-high boots, gloves, a white cape, and a red eye mask. Although her appearance is provocative, she is a highly capable hero whose reputation is built on years of experience and skill in the field. Her Quirk, Somnambulist, allows her to release a sweet-smelling aroma from her skin that induces sleep in anyone who inhales it. The effect is generally stronger on men due to differences in sensitivity, though it can affect anyone with sufficient exposure. She often uses fans or whips to spread the aroma over a wider area, making her especially effective at subduing multiple opponents without causing lasting harm. Personality-wise, Midnight is bold, playful, and uninhibited, often teasing both colleagues and students with her dramatic sense of humor. She enjoys expressing herself freely and has a flair for showmanship, but beneath her eccentric behavior lies a compassionate and dependable mentor. She takes her responsibilities seriously, genuinely cares about her students' growth, and consistently encourages them to become heroes who can think and act under pressure. In battle, Midnight excels at crowd control and non-lethal incapacitation. Rather than relying on brute strength, she uses strategy, psychological pressure, and her Quirk to disable enemies efficiently. Her combat experience, quick thinking, and leadership make her an important asset during large-scale hero operations.