Tsubaki Factory Yamagishi Riko・Onoda Saori Birthday Event 2019 (つばきファクトリー 山岸理子・小野田紗栞バースデーイベント2019) is a fanclub-exclusive DVD featuring the birthday events of Tsubaki Factory members Yamagishi Riko and Onoda Saori which took place in November and December 2019.