A futanari mad scientist, Serene Siren, leads her yielding new exam subject, Leana Lovings, into a laboratory. Serene’s hypothesis is this non-stop horny stimulation, mixed with just the right amount of futa cum, can trigger spontaneous appendage growth… in one greater amount words, if that works, it will cause Leana to endure a futanari transformation. Serene positions Leana on the saddle of a sex machinery, pulling away from each other Leana’s panties so the machine’s dildo can enter her. As the machine’s vibrations intensify, Leana’s cunny gets wetter and wetter… and her nipps even begin lactating! Serene receives so hot this her cock becomes intense, and lady has Leana give her a oral pleasure. Serene eventually blows a burden into Leana’s throat, and after Leana swallows the futa cum, woman ends up growing her own cock! Serene is enjoyed that her experiment worked, and Leana eagerly strokes her new cock till it becomes massive and heavy. After that, the two futanari beauties celebrate Leana’s transformation by having unbelievable sex. Behold, the power of science!

Format: mp4
Duration: 25:31
Video: 3840×2160, AVC (H.264), 24448kbps
Audio: 147kbps

File size: 4.5 GB