Nejire is naturally a very kind, talkative, and endlessly curious girl who shows great interest in people's unique physical features and is easily distracted by them. Due to this, Nejire can be very blunt, often asking invasive or off-putting questions. When she was first at U.A., her personality drove people away from her, with them all believing she was looking down on them due to her powerful Quirk. Because of this, she remained cold and distant from everyone, keeping her emotions bottled in. It wasn't until Tamaki Amajiki, and then Mirio Togata, befriended her that she was able to open her feelings back up again, regaining her confidence. Nejire is an affectionate person and a "free spirit" who has a genuine passion for learning new and strange things and isn't afraid to speak her mind or show how she feels. She seems to like knowing more than others, but not in a proud way, as she enjoys explaining things to people and sharing her knowledge. She is mentioned to act like a kindergartner due to her childish glee. Nejire is enthusiastic, affable, cheery, and always seen moving. She shows a compassionate side to Eri by doing her hair and playing with her in her free time. However, she has demonstrated a more stoic nature during various situations; she is not very concerned for Tamaki when she learns of his attack. Thanks to Nejire's inquisitive and chatty demeanor, she is a notably level-headed individual, though she comes off as an "airhead" most of the time. Despite her happy-go-lucky personality, Nejire is fierce in battle. Nejire can be very calm and focused when the situation calls for it. Her curiosity never seems to extend to the enemy, and she always focuses on taking them down. During the battle against Tomura and High-Ends, Nejire showed great judgment, aptitude, and anger, a side of which she does not often display. Her strong heart has allowed her to climb into one of the U.A.'s top three students.