Reina Uzuki serves alongside Shinobu Misato as a secretary for Jin Majima at CRI's Intelligence Bureau. Her duties include conducting research, maintaining radio contact with field agents during operations, and occasionally chaperoning Gento Kuraku. She typically works in the background. Despite her unassuming secretarial position, Reina possesses significant combat training and experience, proving an excellent sniper proficient with various firearms. Compared to Shinobu, she maintains a quieter demeanor. Physically, she has dark green hair, olive eyes, is 26 years old, and has blood type O.