友田彩也香 & 井口 Costar Works

友田彩也香 and 井口 are an established costar duo, teaming up across 3 works from their initial collaboration 'kira★kira7周年×美5周年スペシャルコラボ企画-黒ギャル学園HIGH SCHOOL BLACK GALS SPECIAL 中出し猛烈大乱交4時間スペシャル-' (2014) to '中出し女肉便器 友田彩也香' (2016). Their collaborations are predominantly released under the ケイ・エム・プロデュース label, demonstrating exceptional on-screen chemistry in genres such as 中出し・女子校生・調教.