[UGO] The story of how I used an app to have some seriously kinky sex with my plain-looking childhood friend—whom I’d dumped years ago—after she developed a voluptuous body with huge breasts and a big butt. (Motion Anime Version)

An ordinary college student named Koichi suddenly realizes how stunning his childhood friend, Yumi Sannomiya, has become: once a plain and unremarkable girl, she has blossomed into a voluptuous beauty with a massive bust, wide hips, and undeniably alluring curves. Recalling that she once confessed her feelings to him years ago, an arrogant Koichi offers to date her, only to be hit with a cold, mocking rejection. The humiliating moment is witnessed by the class gyaru, Yoko Nishino, who openly ridicules him. Fueling a deep grudge and a thirst for revenge, Koichi is caught off guard when a mysterious app suddenly installs itself onto his smartphone—an app granting absolute mind control over anyone he targets.

Using this hypnotic weapon, the vengeful protagonist exacts retribution by turning the girls into submissive playthings. First, he tests the app on the mocking gyaru, Yoko: stripped of her haughty attitude, she immediately drops to her knees to perform a deep, sloppy blowjob before riding him in an intense cowgirl session, vigorously milking him dry while he stimulates her sensitive nipples. Next, Koichi pays an unannounced visit to Yumi’s home. Activating the app instantly shatters her pride, transforming the former childhood friend into a desperate, lustful maiden who French kisses him eagerly, spreads herself open, and begs for raw bareback breeding.

The story culminates in an uninhibited harem endurance marathon where the submissive gyaru and busty childhood friend compete to pleasure their master. The intense uncensored 2D hentai scenes deliver synchronized double paizuri, alternating deep raw penetration into tight pussies, and continuous creampie finishes until dawn. Blending mind control, hypno-corruption, semen extraction, and explicit rule 34 harem action, this adult adaptation follows two formerly dismissive beauties as their resistance collapses completely into non-stop, addictive pleasure.