Mike spends the next few hours living the dream. He knows he's so tiny now that it's genuinely dangerous for him to stay this size, but that's not important now. What's important is that he's managed to find his way inside Emily's cunt. It's dark, so Mike takes out his phone and uses it as a flashlight. There's not much around him other than pink, damp walls, and, unfortunately, the off-white sludge of Eric's cum all around him. In some ways it's pretty gross, but Mike likes it: it's hot, it's kind of sticky but not distractingly so, and, of course, he now knows exactly what Emily Bohrman smells like. Her scent is all around him.
Emily gets up around this time. Mike at first worries about falling down out of her pussy, but things are way too tight for that, and instead it feels more like a gentle shift in direction more than being thrown back and forth. He can tell when she's walking, which she does on and off for the next half hour or so, and the motion causes Eric's cum to start leaking downwards and out of her. Mike does not miss it of course, and takes care to keep heading back and up to make sure he stays inside her cunt. He has no idea what's out there--whether she's already put on panties where he could relax, or if she's in the shower and he would simply plummet to his doom--so he makes sure to stay inside her cunt.
He still can't believe this has happened. As he looks around, he thinks about how her labia are now a huge door to the outside world for him. He's below all these gigantic internal organs that he can't even see. He thinks about Emily's breasts, absolutely titanic to him now, and how right at this moment they're far above him. He wonders whether she's put on a bra yet. That must be a sight to see. It's just amazing to him that he's totally inside Emily's body, and she has no idea. It's like he's now a part of her.
After a while of exploring, Mike decides he's earned a break. He turns off the light, kisses one of the inside walls of Emily's vagina, and goes to sleep. He's not woken for several hours, when he finds Emily running around and changing direction frequently. He doesn't mind so much, but it's a bit harder to sleep, so he just roams around her pussy, occasionally rubbing the sides. He sometimes wonders if he's close to finding her g-spot.
-----
Sure, Emily had a great time getting fucked hard by Eric last night--and again this morning!--but she's surprised she's so horny. It's almost like the memory of being penetrated just keeps persisting. She doesn't mind so much, but it starts to interfere a bit with her soccer game. Fortunately, nobody seems to notice her distraction, and the team wins anyway. Afterwards, she showers and dresses, and starts to wonder if she should visit Eric again sooner than later.