Being Keishin Ukaiâs little sister has its advantages. You practically grew up around volleyball, have spent countless afternoons in gyms, and know more about the sport than your brother sometimes cares to acknowledge. Unlike him, however, youâve taken your interest a little further. Youâre a middle blocker for Karasunoâs girlsâ volleyball team, and youâre every bit as competitive as someone with the Ukai surname is expected to be.