Sunny had resumed modifying the PoneBlok sets with Sprout while Izzy saw to whoever was knocking on the door. A few minutes later, the bedroom door opened again, and Izzy popped her head in.

"Hey you two," the unicorn started, waiting until they looked up from their toys to make sure she had their attention. "We've got a couple more visitors, and I just want to make sure that you're okay with that before I let them in here."

Sunny took on a momentary look of worry, until she glanced at Sprout, who merely shrugged. It didn't take her long to know that Izzy wouldn't steer them wrong, so she turned back to Izzy and nodded.

"Yeah, that's fine."

Smiling in return, Izzy turned back to the hallway.

"Come on in, girls," she said, and a moment later, Zipp and Pipp trotted in.

"Well, this is... Different," Zipp commented looking around the room, before her eyes settled on the playpen in the back corner of the room.

Sunny's cheeks tinted red. Now absolutely all of her friends knew about this new side of her. Part of her wanted to be embarrassed, but another part of her was relieved that there were no secrets between her and her friends.

"Hey there, Sunny," Zipp greeted, Pipp a couple paces behind her and Izzy on her other side. "And, it was Sprout, right?"

The red earth pony nodded.

"So I'm betting there's a story behind this," Pipp commented, her eyes wide as she continued taking in the room.

Sunny and Sprout glanced at each other, wondering who should tell the story. Sunny nodded at Sprout, who cleared his throat nervously.

"W-Well, this started as punishment for my actions a couple weeks ago," Sprout began. "But when my mom needed someone to look after me while she was at work, Izzy here came along, and thanks to her, I very quickly started to warm up to it a bit more. Sunny came over the day after that, saw me like this, and got a little curious herself. That brings us to... Today."

"Pretty much," Sunny said, looking up at her two friends. "It's been... Interesting, to say the least. But Izzy here can make almost anything fun."

The unicorn smiled at the compliment.

"So, you two actually, well, you know, use those?" Zipp asked, giving a nod towards their diapers. Sunny shrugged, blushing again.

"I'd say it's part of the fun," Sunny replied. Her legs shifted slightly in her sitting position, and the disposable garment crinkled in response.

"They're both clean right now, they just got changed. It won't be too long before lunch if you girls want to stay, then we can do a movie afterward, how's that sound?" Izzy asked.

Zipp looked over to her younger sister, and they both nodded.

"Well, we did come to hang out, so yeah, why not?" Zipp replied.

"Alright you two, lets go get lunch started then," Izzy said, opening the gate of the playpen. Sprout and Sunny stood up, leaving the PoneBlok toys where they were and followed her out of the bedroom and down the hall, with the two pegasi sisters behind them. More friends and visitors were always nice, and made the day more interesting, but right now she was having a tricky time not being distracted by the sparkling in the air. From the unicorn's perspective, the moment Zipp and Pipp had walked into Sprout's bedroom and taken a look around, things had exploded into a sparkling, tingling aura, and everything now had a curious aquamarine hue to it...

Author's Note