[Imai] Man and Woman Falling into the Futanari Giantess Sex Industry

A nervous couple steps into the private home service of a teasing futanari giantess who purrs that once they've known a giant they'll never be satisfied with a human lover again, offering a free trial the boyfriend can't refuse. Her towering, soft body and thick, heavy cock completely overwhelm their tiny forms, stretching stomachs into tight, quivering bulges and flooding them with heavy loads meant to be swallowed back down. Drawn deeper with every thrust, the lovers slip from curious customers into devoted personal onaholes, learning together what it means to be shaft siblings utterly at her mercy.