In a cramped, dimly lit room, a shy Japanese straight boy tentatively explores his sexuality. He timidly strokes his hard cock, fingers barely grazing the sensitive flesh. His eyes widen as he catches his reflection in the mirror, a mix of shame and excitement washing over him. He leans back, legs spread wide, and begins to thrust into his closed fist, his moans soft but insistent. His release is explosive, cum spurting onto his stomach as he pants, eyes closed, lost in his forbidden fantasy.