"Er...nevermind sis. It doesn't look like this is going to work too well," you groaned knowing there isn't a bra-size in the world to cup her breasts especially with you inside.
You started to hear sniffling from you sis. You couldn't see but you knew well that she was crying.

"You mean...you're going to leave me?!" she gasped, tear-eyed. She wrapped her arms around her giant breasts that contained you and squeezed.

You started to feel the pressure as the walls around you closed in and massaged you. You were going to die from exhaustion if you came anymore. "Stop sis! That's not what I-"

"No! I won't let you leave me! I love you Nick!!"

"Oh god damn it," you moaned. You couldn't resist anymore. "I love you too Rose!"

You cummed inside of her and she moaned as she lactated a bit. She let loose of her breasts with a satisfied expression. "I'm so happy..."

Damn it..., you thought, I have to get out of here for right now

"Rose, could you let me out please?" you asked.

Rose frowned a little, but she nodded. "Okay bro."

The walls around you began moving and you felt yourself picked up and carried by contractions and expansions. It took longer than you had expected when in about 30 minutes, you saw light from the opening of her breasts.

"Oh my god...it's so bright," you winced. You hadn't realized how much your eyes had to adjust after being contained in a dark, moist area.

Your head popped out of her breasts and you saw Rose immediately, winking at you. You blushed and started to squirm to get yourself out of her breast. You wiggled your arms out and finally pushed yourself out. Rose moaned as you felt her being. Her breasts decreased in size, but it was larger than it had been before this mess happened.

You looked at yourself, completely drenched in her milk.