Osaka begins to think of what Sakaki would look like if her whole body was puffed up all over. She imagines Sakaki with puffed feet, puffed hands, a round body...but she seems more amused when she imagines Sakaki's head being no bigger than it usually is. Of course, now that Osaka has a mental picture of it, it's only a matter of moments before Sakaki's body will begin to change.
Meanwhile, Sakaki is completely unaware of what is about to happen to her. Her first sign that something isn't quite right is the sudden sensation of pressure in her hands, feet, and mid-section. "Ah...this feels odd..." Sakaki says, as she first looks down to see her feet and mid-section are swelling up, and looks to her hands to find the same thing is happening to them. She looks rather surprised, but that's about all. "Oh, what...what's happening to me?" she says, as she continues to swell up. She can feel the pressure in her midsection spreading out to her torso and waist, and then her arms and legs. Sakaki blushes, as this is causing her to stand out a lot more than she normally does. Though she does notice that this doesn't seem to be hurting her at all or causing discomfort, especially once her feet burst out of her shoes and socks.
By the time Sakaki's body was finished swelling, it had a rather cartoon-ish appearance. Her body was swollen as wide as she was tall, and her puffed feet added quite a bit to her height. Her feet look as if they're a pair of small beds attached to her body by her ankles, and her hands look like the kind of gloved hand a cartoon character would have.
At this point, Osaka shows herself. "What do you think, Sakaki? I thought this look would make you look really cute." says Osaka.
A little surprised that Osaka somehow caused this to happen, Sakaki blinks for a bit, then blushes. "Oh...you...really think so? I mean...I thought so too, but to hear someone else say it..." she manages to say, blushing a little more.
Osaka gives a quick nod. "Mmmhum, wouldn't have done it to you if I didn't think it would help." she says. "I'm glad you like it, Sakaki."
Sakaki blushes again, realizing that while she never outright said she liked it, it does seem rather enjoyable. "Oh, yes...it's really different...but it does feel really nice..." she says, wiggling her puffy toes just a bit.
Osaka smiles. "So, do you want to be bigger, then?"