An impulsive girl often depicted frowning. She is hotheaded and is not afraid to express her thoughts as loud as possible. Occasionally, she vents out her frustration on Kazumi by smacking her on the head (especially when Kazumi begins doubting herself). She also thinks of herself highly, sometimes even calling herself "Mirai-sama". Deep down, she is a caring girl.

Mirai can become enraged, but she also calms down quickly. She seems undisturbed by own rash actions during these times, until she notices others' reactions.

She also greatly admires Saki, to the point where it sometimes interferes with the Pleiades' witch-hunting efforts. Harm befalling Saki is one of the few things that can consistently anger Mirai.