Kei Okazaki is a dedicated and professional Special Police Officer in the visual novel and anime series Collar x Malice. Known for his calm demeanor and exceptional skills in investigation and combat, Okazaki becomes an integral part of the team working to solve the X-Day incidents threatening Shinjuku. His role in the series is both as a protector and a strategic thinker, often providing invaluable insights and guidance. Despite his serious nature, Okazaki shows a gentle side, especially towards the protagonist, forming a deep bond as they face numerous challenges together.