The Moonlight siblings, Itijiku and Kurumi, sunbathe on a secluded Japanese beach, their swimsuits barely containing their desires. Itijiku, a slim femboy, can't resist Kurumi's growing erection. He leans over, gently rubbing Kurumi's trans cock through the damp fabric, earning a soft moan from his sister. The salty breeze and the sun's heat intensify their intimate moment.