Cory took a quick look at his sisters and made his decision, the prospect of being able to find in a place they haven't suggested to be too good to just ignore. But he didn't want any of the giantesses mad at him, and he definitely didn't want his girlfriend of all people to find out what he was thinking and planning to do with one of his sisters. 

"Katie, please hide me!" Cory pleaded to his little sister, the one holding him in her hands. He looked at her small breasts to make it seem like he wanted to be hidden there, but kept stealing glances down at the pink skirt she was wearing. Gabby was using blue jeans and Maddie was using pants, so Katie's skirt looked like the easiest obstacle to reach the place he wanted to reach.

"Sure enough, little brother," Katie said and giggled, pleased at his pick.

"Aww, I wanted to be the one hiding him," Maddie confessed.

"What are you doing Cory? You know you will fall from there," Gabby admonished him in a nasty tone, also showing her disappointment at not being chosen

"Shut up! You will get your turn with him later," Katie said to her sister and adjusted her push-up bra to hold her tiny brother in a safe place. But Cory was indeed counting on what Gabby just said. He tried to ignore how nice everything around him felt, the snug pressure against the warm surface of Katie's body, the gentle heartbeat that suggested this was a safe place and how hot it was to be trapped and how hot it felt to be handled with such ease by his cute little sister. He needed to be focused to make this work.

"Oh, that must be Cory's girlfriend," Maddie said when everyone heard the doorbell and went on to greet her. Cory couldn't see anything trapped as he was, but he was waiting for the right time.

"I should hide this stuff too, and bring an actual board game just in case," Gabby said pointing at the shrink ray and at Cory's phone which could raise questions too. Katie just nodded and hummed to herself a bit, basking in the feeling of being the first one to play with her shrunken brother. She knew she was his favourite, but it was still a nice shot of confidence that he preferred her over her older sisters for something like this.

After hearing Gabby walking, Cory started to work on getting free and falling from his giant little sister's cleavage. The push-up bra she was using was holding him well, but there was enough space for him to attempt making it through the other side and hopefully slide down to his preferred destination. He tried to be as eager and careful at the same time as he could, feeling like a kid back then when digging to make it to the other side of a fence but in a quite different and more exciting environment.

"Huh? What's wrong little bro?" Katie whispered looking down at her bra. She tried to adjust it again to keep her brother comfortable but what she achieved was making Cory's task easier, making him slide down her pudgy belly until he finally could grab onto the skirt. 

Cory was a bit dizzy but was still delighted things worked as he expected

"Katie please hide me!" he shouted up trying to get into the skirt by himself, to suggest her the idea that wasn't considered.

"Oh crap, but where ... It's Brianna, just hang on there bro," Katie said and just as Cory wished, she quickly grabbed him with one hand and with the other adjusted her skirt to hide him inside her panties.

"Sorry little bro, don't do anything funny and don't tell anyone," Katie whispered as she dropped Cory's body inside of her panties and with the other hand released the elastic band to keep him trapped there, adjusting her skirt again just in time before greeting Brianna.

What happens next?