Incestuous siblings' forbidden delight

A brother and sister, bound by blood and boredom, find solace in each other's company, their bodies responding to unspoken desires. The brother, excited from a workout, bursts into the bathroom, catching his sister mid-masturbation. Anger flares, but so does curiosity. Later, they return to their room, naked and honest, exploring each other's bodies with tentative touches. The sister's eyes widen at the sight of her brother's throbbing erection, her own pussy aching for it. Just as they're about to consummate their taboo lust, a knock at the door forces them apart, leaving them breathless and yearning.

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