Inside the bat's boobs Traveling the Multiverse chapter 14 by dellobenedetto

"...Well... I would love to have you take a trip inside my boobs."
You blinked, looking between Rouge's face and chest. "Th-that... that's it?"
"That's it," she repeated, already working on freeing her boobs from what turned out to be a very compressing chestplate. "You've experienced enough of my outsides, I think it's time you got to go inside one of my intimate spots. Plus, having you in my tits will make it easy for me to keep track of you, but not as distracting as if I put you down below."
"Aheh, understandable." You nearly fell on your butt from her boobs slamming onto the table you sat upon, and due to wanting to keep most of your magic a secret you had to climb a bit up the soft wall to reach the nipple. "So, just... rub your tit a bit to climb inside?"
"Exactly. And if you can do anything in there to make them bigger or make me lactate, I'd love to do so. Would help a lot when teasing victims—I-I mean, partygoers at Club Rouge."

You chuckled a bit from her slip of the tongue—guess she's trying to keep her thieving side a secret from her fans—and start rubbing the nipple, savoring Rouge's coos as it twitches, hardens, and opens up just enough for you to crawl inside. There's enough space to stand once you get past the entryway, but you end up gripping the walls as the world shudders around you. Based on the motion, it appears the bat's spending some time topless, likely getting up to grab some more popcorn. Not that you need any of course, as you grab a drop of Rouge's milk from the wall nearby—and find it to be remarkably sweet, and more filling than movie snack food could ever be! That flavor makes you break into a run, eager to see how much more awaits you.

It doesn't take long for you to reach the main part of Rouge's breast... But what do you find in there?