[Chinese]SCOP-326 At the private family hot spring at the travel destination, sister and brother bathe together. At first, both are shy with each other, but when the sister sees her brother's erection, she gets excited and invites him...

During a family hot spring trip, an older sister and her younger brother enter a private bath. The naked, developed body of the sister is too stimulating for her virgin brother? Seeing this, the excited sister can't hold back anymore and starts to tempt him... Initially confused by the forbidden relationship, the brother's body honestly responds, becoming fully erect, and in the end, he even helps her with her first time...