UMD-1018 I made my sister and her girlfriend's pussies explode with the notorious dangerous energy drink 'Sensitivity Explosion Sensual ●'!

A boyfriend who recently feels something's off about sex with his girlfriend. To make that sex the best moment, he gets some aphrodisiac online. That tasteless and odorless mysterious liquid is said to enhance libido, a magical liquid rumored on social media! I mustered the courage to buy it, but thought using it on her right away was a bad idea. So I had my sister try it first. When I secretly had my sister use that aphrodisiac, its effect was incredible!! It was even better than rumors said!! After successfully testing it out, I finally gave it to her!! But the aphrodisiac worked too well, leading to an unexpected development!!