Kai is a tomboyish who taunts those who belittle her and swears without holding back. However, a deep gap moe is visible whenever she goes emotional. Nuts are recurrent in her puns. Kai quickly admitted being down bad type, notably by simping on her genmate Momo Otako. A challenge at OffKai Expo revealed she is also the least smart member among her genmates, being unable to discern a single lie about them and Riro Ron.