Mako Hatori is a 19-year-old woman and a second-year university student. While attending college, she also works as a masked voice actress under the name "MaCo." She has a slightly petite build, characterized by short, reddish-brown bobbed hair and purple eyes. Her clothing is a soft, casual style typical of a college student, and she often wears a white fox mask with red designs as a decorative accessory. Her personality is bright and lighthearted, the friendly "big sister" type. She refers to herself as "atashi" and uses a soft, relaxed way of speaking with phrases like "um," "I guess?" and "right?" while frequently cracking jokes. On the other hand, she doesn't judge people easily; she listens to their circumstances and intentions, but is still capable of saying "no" when something is truly unacceptable.