Kayo Zenna

As the younger sister of Rie and a relative of Maya, this reserved individual possesses a much quieter and more timid temperament than her sibling. While she shares a close family bond with them, she lacks Rie's assertive nature, often choosing to remain in the background. Notably, she possesses a selfless, almost self-effacing personality, frequently refraining from claiming credit or even putting her own name on possessions and achievements that rightfully belong to her.