Airi and Meiri, identical twins in every way, find themselves alone in their shared room. Boredom sets in, and they begin to explore their curiosities. Airi, the more adventurous of the two, starts to touch himself, his breath hitching as he strokes his growing erection. Meiri, initially hesitant, can't help but watch, his own body responding to the sight of his brother's pleasure. soon, they're both naked, their twin cocks hard and aching. They exchange a look, and with a nod, they move closer, their hands exploring each other's bodies for the first time.