Rei

Rei is a student studying at the M.M.R. Vocational School. She is often seen accompanied by robotic penguins collectively known as "Naru." A third-year student from the M.M.R. Vocational School, who nevertheless has the appearance of a small child. Despite the fact she is childlike in both her demeanor and personal hobbies, she utterly despises being referred to as "kid" or "little girl." As a senior, she feels obligated to take care of her fellow students who are younger than her, and spares no effort in doing so. Despite being a third-year student, Rei looks and acts like a child, fitting for her appearance. Because she has seniority over the other students, she feels entitled to do as she pleases. Her favorite pastimes include eating snacks, playing music, and hanging out with her friends. She is completely aware of what the M.M.R. Vocational School is and what her purpose is within it, she actually likes attending class because she gets to live like a normal teenager for the most part. She has poor grades and tends to sleep in class. Though it's easy to get her to throw a tantrum, all one has to do is share some snacks with her or call her cute to calm her down. When times get tough, Rei is able to step up and work with her fellow students towards a shared goal.