優子 & 平井シンジ Costar Works

優子 and 平井シンジ are an established costar duo, teaming up across 2 works from their initial collaboration '夫は知らない ～私の淫らな欲望と秘密～ 白木優子' (2015) to 'ルビー専属第1弾 優子女将 超VIPなおもてなし2発！ 白木優子' (2025). Their collaborations are predominantly released under the ルビー label, demonstrating exceptional on-screen chemistry in genres such as 熟女・美乳・中出し.