Mizuki is a moody person, and Kanade thinks they only act on their own principles. They have a strong desire to express themselves freely, and can become frustrated and upset when ridiculed. They have an obsession with cute things, expressing it through their hand-altered fashion.

Despite their energetic, carefree, and sometimes childish demeanor, Mizuki is often shown to be the most mature member of their circle, as Ena admits.They often assume the role of mediator in arguments, breaking things up between Mafuyu and Ena.