Yunyun has a determined, caring, and gentle personality. She is also quite shy and quick to blush. She is not always honest with her feelings. While very intelligent, she often takes other people's words too literally. Aside from Megumin, she never confronts others, even when she knows they have lied to her. She is the only Crimson Magic Clan member to not display eccentric behavior, leading her to hold mixed feelings towards her own clan.