市井結夏 & 杉山 Costar Works

市井結夏 and 杉山 are an established costar duo, teaming up across 2 works from their initial collaboration '「ママパパごめんなさい…私、もう娘でいられなくなりました…」純朴美少女が拐われ囲われ変態おじさんと調教姦 ゆか' (2024) to 'ボーイッシュ オジサンの大きなイチモツに憧れる性欲旺盛娘の勃起クリトリスぶっ壊し潮噴射！快楽中毒に沈めツルまん無責任中出し 市井結夏' (2025). Their collaborations are predominantly released under the First Star label, demonstrating exceptional on-screen chemistry in genres such as 中出し・フェラ・潮吹き.