[Yuzumikan (Yuzuki Ruri)] Shiryou ga Nakereba Jibun ga Nareba Ii | Become Your Own Reference [sakurei]

The next day, a newly transformed woman confronts the most tangible change to her body: a pair of strikingly large, soft breasts that shift heavily whenever she moves, leaving her embarrassed beneath a loose shirt and choker. A man in a cap becomes equally fascinated, squeezing and fondling them until her teasing laughter gives way to mounting arousal and rough sex. Their awkward anatomy lesson turns into a comedy of erection, touch, and orgasm, with her wondering aloud why only he seems to climax as their bodies press together.