I just looked at V.League pages for both Miyabi Horisako and Miko Sasaki. Neither of them has registered a swing in regular tournament play
Sasaki registered on 2018-01-16. Her zero stats start with the 2020/21 season
Horisako registered 2022-01-20 and I guess never dressed last season because there is nothing there for her
Yoshiko Kamei, was a high school hot shot who registered same time as Horisako but hasn't dressed either
Saitama also has this 3rd year Uni Girl, Rina Yamaji, who's tearing it up in Uni but hasn't registered a swing yet either. They signed her mid season 2022/23, dropped her at the end of the season and then re-signed her this season
This all seems a little Okayama-esque