潤 & 北こうじ Costar Works

潤 and 北こうじ are an established costar duo, teaming up across 4 works from their initial collaboration '人妻寸止め焦らし絶頂中出しエステ お願い…もうイカせて下さい…' (2016) to '父親の介護をする娘5' (2025). Their collaborations are predominantly released under the ルビー label, demonstrating exceptional on-screen chemistry in genres such as 中出し・熟女・人妻.