Melanie finally arrived at her apartment building. For Chris, the walk there was a long one. He had no idea how much ballsacks got kicked around while their owners walked, and he had one his whole life! He didn't mind Melanie's penis flopping on his "face", but the constant shifting of his view took some getting used to, and he was considering releasing himself from Melanie's crotch when she got home. But get used to it, he did, and despite the rough ride, he didn't feel any worse for wear. Ballsacks like himself were made to endure rides like that. And, admittedly, it kinda tickled his insides when she got on the elevator, and the balls within him got tugged down by the momentum. By the time Melanie got into her apartment, Chris decided that he'd stay Melanie's ballsack for a while longer.
"Well, here we are, Chris. You know, you're the first guy in my apartment besides my boyfriend. Though, I don't know that a woman's ballsack counts as a guy, huh?"
From there, Melanie put away her groceries, then in the living room, she opened a drawer, where Chris could just barely see her put the contents of her pouch into. She lifted up her penis so he could see, and what he could see was his clothes and the Controller of Reality. "I don't know how long you'll be staying my ballsack, but here's your stuff when you're done. You'll have to tell me what this controller is. I like tinkering with electronics, and this looks neat." She then closed the drawer. Chris would've sigh in relief if he still had lungs.
Melanie then went into her bathroom. As she lifted the seat, Chris mentally panicked. He didn't know if public urination was allowed in this reality, but he had no interest in watching someone take a piss. But here he was, with an up-close view of Melanie's penis serving its primary function. The situation wasn't awkward enough to make him want to stop being her ballsack, but it was still pretty dang awkward for him. Moreso after Melanie finished (and wiped her penis), when he discovered that she hadn't closed the bathroom door behind her.
That is, until she closed it to look in the mirror hanging behind it. She lifted up her penis, and in front of Chris, he could see his current form. If he didn't know that was himself, he'd swear he was looking at some random person's ballsack. Heck, even knowing that ballsack was him, there was this feeling of disconnect. "Well, there you are. I'm kinda excited about you being there. See my tail wagging behind me? That's how excited I am. I'm sure this is hard to believe, but you're actually the first person that I've absorbed. I wonder what it's like. You don't feel any different." As she spoke, she fondled and poked at Chris. She then did some small hops, with Chris and Melanie's penis flopping around. Now THAT was a ride.
Eventually, though, the novelty of having a sentient ballsack started to wear off, and Melanie moved into the living room to watch TV. Melanie sat on her sofa, closing her legs together, leaving Chris in the darkness between her legs. A straight guy would probably love this, but Chris had no interest in the woman's legs. Next time he gets to use the Controller of Reality, he's giving women manly legs. For now, though, he decided to endure. He can't release himself to use the controller. Not without having to explain to Melanie its reality-changing functionality. So, he sat there, listening to the TV. Sounds like she was watching a sitcom. Some laughs here and there, the sound of someone getting hurt at one point. Sounded like an accident. Come to think of it, he used the controller to make humans non-violent. Are they still able to write violence?
"Oh! Sorry! I'm so used to sitting like this, I didn't think about whether you could see." Melanie opened her legs, exposing Chris to light. Not that it helped much, as her lengthy penis still obstructed his view. And out of habit, she soon shifted her position and closed her legs again, anyway.
This went for about an hour, before eventually she got up to cook dinner. "Usually I cook fancier meals, but today is my day to cook simple. Fish and mac and cheese. You going to want some? I know you're my ballsack and don't eat, but maybe you could come out and eat and then merge back." The offer was tempting for Chris. It would give him an excuse to get to the controller. However, he actually did not like fish, making him glad that she's the one who will eat it and not him. Better yet, the food at no point will go through him.
When Melanie saw that he wasn't releasing himself, she got to cooking, making just enough for herself. As she cooked, she struck up a conversation, keeping her body guest entertained. Talking about things like what's on TV (no mention made of violence), and taking him up to see the greenhouse on the roof, which was overlooked by herself and other tenants. Soon, supper was done, and though Chris wasn't the one eating the fish, he could faintly smell it. The musk of Melanie's penis was thankfully stronger.
An even stronger scent would soon come, though. After supper, Melanie made another trip into the bathroom, this time sitting on the toilet. Chris now dangled in the toilet bowl, a location that was quite uncomfortable for him, despite knowing that his own ballsack was regularly hung in a similar location. From behind him, he could hear Melanie do her business. A light splash (a drop even hitting him!), and then came the smell. Having no physical nose to cover, nor any way to cover one even if he did, he had no way of blocking the scent that now surrounded him. Next time he gets the controller, he's making it so body merges don't retain a sense of smell.
After a bit more TV, it was time for bed. Melanie took the time to brush her teeth, and stood once more in front of the mirror, lifting her penis so Chris could see himself. "Well, Chris, you just spent half the day as my ballsack. I guess since you're still there, you're enjoying yourself quite a bit. Getting absorbed must be a pretty great experience. When you're done, you should let me become a part of you, okay?" She then let her penis down, and headed back into the living room. Taking the cushions off the sofa, she opened the bed hidden within, and got under the covers. "Goodnight, Chris."
And that was the end of Chris's first day as a woman's ballsack. A pretty eventful day, along with all the other changes he had made with the controller. Removing pants from existance; making humans invulnerable to the elements; making humans non-violent; making them open to all physical interaction; giving women male genitals (and big ones, too); giving humans kangaroo pouches, Shiba Inu tails, and leafy antlers; and giving humans the ability to absorb each other. And he felt like he only just tapped the potential of the Controller of Reality. Perhaps in part because he only briefly got to enjoy some of those other changes. He's a furry, after all. He'll probably eventually leave Melanie's ballsack, and experiment with more changes.
For now, though, he was content to leave things as they are. As Melanie started falling asleep, he could feel himself falling asleep with her. Cozy under the covers, and snuggling with the biggest penis he ever met (albeit without arms to snuggle with). Being a ballsack may not be the ideal life he was hoping for, but the perks made it worth it, so far.