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Mina is a cheerful and easygoing girl who usually displays a smile. Highly social and excitable, she loves to hang out with her friends and is shown to become very upset when denied an opportunity to be at a gathering. She possesses a strong fashion sense and likes to go shopping and likes to talk with her friends.
Due to her athleticism and energy, Mina enjoys and is very skilled at dancing. Her demeanor becomes more strict and perfectionist when teaching others how to dance, in direct contrast to her usual happy-go-lucky nature. She is known to use her dancing to somehow pacify even those who have bad relationships with others.
Mina's academic performance is quite poor, with Mina goofily laughing about it despite showing clear anxiety and frustration. Because of that, she is often viewed as an airhead by her classmates (second only to Denki Kaminari). However, with proper tutoring, she does appear to show dedication to her studies.
Mina is extremely courageous and is viewed as an ideal personality for hero work. Before entering U.A., Mina would condemn bullying in middle school and even convinced some bullies to come around with her upbeat and easygoing demeanor. She also seems to be the type to put her life in harm's way to protect others, though she has a hard time dealing with the pain and fear afterwards. This stalwart attitude was seen when she lied to Gigantomachia to protect her friends from the behemoth’s anger and successfully got the giant to leave, just before collapsing into tears of fear and relief, showing that the ordeal had terrified her as well.
Mina is somewhat of a romantic and holds a lot of interest over other people's love lives, to the point of being obnoxiously curious and intrusive about them. Her suspicions, however, tend to be rather baseless most of the time, as she seems to view any instance of a pairing as possible proof of a relationship regardless of compatibility.