Yuyuko couldn't possibly hold back anymore, her stomach growling with excitement. She cut herself a sizeable portion of the cake and put it on a silver platter.
Eyeing the piece, she first licked the cream off of the top, dirtying her mouth in the process, but she didn't care. She bit into the cake like a predator bites into its pray. Her beautiful kimono got dirtier with every bite she took, but it mattered not to Yuyuko.
The chocolate was exquisite. Even to a connoiseur, it was one of a kind, much more so to Yuyuko. Youmu never allowed her sweets so she had to sneak them by, but this time she was unchained. Unleashed. Still hungry.
Before she knew, the platter was empty. Instinctively, she bit into the rest of the cake, not even caring to cut it up. In her delirious state, she devoured the humongous cake. As she tried to guide every piece into her mouth, the platter on which the cake has been set tipped over, all of it spilling on her.
This startled her as she dropped on the floor, chocolate everywhere. Finally somewhat snapping out of it, she noticed something has changed.
What laid before her was a large bulbous mass, violently protruding through her kimono, all covered in chocolate. She inevitably arrived to the shocking conclusion: This must be her belly. As the calories were fresh, the fat has had yet to settle, at the moment forming what one would describe as a belly of a "lady in her 8th month". Yuyuko affectionately stroked this food baby, the baby seemingly reacting by growling.
While doing so, her belly has begun to slowly lose its tense spherical shape. What she noticed as a result of that were her breasts. Funnily enough, like you get used to looking at your nose, she has gotten used to ingoring her two melon-sized breasts, but she couldn't anymore.
They now pushed aside the kimono and jumped out into the open, finally enjoying their freedom. She untied the obi that had been restricting her growth up until now. Sagging slightly, her milk tanks rested slightly on her stomach, even surpassing it somewhat.
As chocolate also has the effects of an amphrodisiac, her next course of action was only obvious.