[Cocomachi] Genkai Hounyou 2

A sheltered young woman who has never once been hit on gets reeled in by a tall, busty seductress with a wicked smile and a million-yen wager—soon bound naked over a basin, made to drink tea, and trembling as her bladder pushes past its limit. The dominant beauty torments her mercilessly, even straddling the basin herself to show off how sweet relief feels while the desperate girl begs and sobs to switch places. When release finally crashes over her bound body, her captor rewards her with an embrace from behind and a very interested invitation to meet again.