"Hmm..." Said a mischevious voice. 
"We should them out now, 'lil sis! You can be in charge of the welcome waggon, I don't feel like seeing the poor suckers yet, their little faces will bring tears to my eyes! Upupu..."

Within each locked room, were camras and microphones that recorded everymoment and every sound, streaming it live to a hidden location where our mastermind sat. But if course! You can't see them! They're teeny tiny! Smaller than an ant, they're better than the kind the secret service uses!
Drinking their red wine, the mastermind watched the show begin its first episode.
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There was a soft knocking against each of the doors, a child like knock. A timid, high pitched voiced asked a question. "H-hello? Are you all awake now? I'm going to open up the door, now that you've been aquainted with one another..." There was a small clicking noise behind each door. The locking mechanism had been tampered with and doors were now unlocked. Everyone was able to exit, but were they prepared for what they would find?

Waiting for them was an unusual cream and pink rabbit. It waited infront of a fountain and statue, holding a sign that read 'Party Time!'. As the rabbit waited for the children to exit the rooms they were locked in, she swung her 'feet' back and forth whilst sitting on the ledge of the fountain. 
Conveniently, each room, was essentially, a small moveable storage shed, each one was placed next to each other in a row, positioned a few metres infront of a miraculous fountain.
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Himiyo Koroko

"Sssh!" Said Himiyo, placing a finger over her lips, she attempted to silence the boy, as she could hear something, or someone. "Do you hear that knocking?". It was as Himiyo said. A small knocking noise could be heard before there was a child like voice. The voiced claimed to be letting them out, soon thereafter, there was a distinct noise that could only be described as 'unlocking'. Turning to the boy dubbing himself as 'Koshiro' she decided it was best to ask him before doing anything.
"This our way out! And for the time being, just call me... Kaptain! I seem to be... Forgetful at the moment."
Placing her hand over the door handle she looked at him. 
"When you're ready, I'll open it up."