[Shimau Seisakujo (Shimau Sorine)] Futanari Onnanoko ga Kyouei Mizugi no Onee-san to Ecchi suru Hon | A Book Where a Futanari Girl Gets Naughty With an Onee-san While Wearing a Swimsuit

In a sun-drenched setting, a playful futanari girl finds herself in a steamy encounter with a graceful onee-san. Clad in tight, wet swimsuits that cling to every curve, the tension builds as a simple moment of stretching leads to unexpected physical intimacy. What starts as a tease quickly escalates into a deep, intimate connection, where the boundaries between playful teasing and raw desire blur, leaving them both breathless amidst the heat of their shared passion.