りこ & 井口 Costar Works

りこ and 井口 are an established costar duo, teaming up across 6 works from their initial collaboration '絶頂82回！！ミスコン準グランプリ現役女子大生の豊満BODY 激イキ！初体験4本番 水澤りこ' (2016) to 'ガチ中出し5P大輪●！Gカップ巨乳美人アパレル店員が彼氏に内緒でナマ中出し輪● 素人コスプレイヤーりこ（23） 百瀬りこ' (2024). Their collaborations are predominantly released under the エスワン ナンバーワンスタイル label, demonstrating exceptional on-screen chemistry in genres such as 乱交・3P・4P.