Between Friends: Unexpected Domination

The humid heat of the night envelops the garden as two friends indulge in the hot tub, light laughter and sweaty skin under the stars. What was supposed to be a simple relaxation session takes a turn when one of them, in a soft but firm voice, suggests a massage… which turns into a much more daring game.
Soon, the submissive friend finds herself tied to bamboo poles, her wrists immobilized, offering her body to their mercy. The first slaps resonate, leaving pinkish marks on her sensitive skin, each blow mixing pain and pleasure.