Nayuta is protective of Denji, wanting him to break off his relationship with girls as every woman he met tried to kill him. She seems to be very demanding, holds peace signs, and wants ice cream every day. Denji describes her as very smart. Nayuta has taken on Denji's informal way of speaking, and even laughs like Denji. She is also well-spoken at times. She is shown to be very impish and mischievous.