理子 & 北こうじ Costar Works

理子 and 北こうじ are an established costar duo, teaming up across 2 works from their initial collaboration '初撮り五十路妻 むしゃぶりつきたくなるエロ大乳輪 永井絵理子' (2019) to 'スケベな伯父とまじめな従兄弟を2穴で堪能するド変態姉さん 徳島理子' (2025). Their collaborations are predominantly released under the ルビー label, demonstrating exceptional on-screen chemistry in genres such as 熟女・巨乳・3P.