Hyperdimension Neptunia belongs to Compile Heart, Idea Factory, Sega and whomever else worked on it.

Flying to Planeptune, Black Heart mentally sighed, wondering why Neptune had called her, Blanc and Vert to come to the Basilicom. "I swear, if it's something stupid, I'm going to turn her into a mop and use that head of hers to clean the floors of my entire Basilicom."

She thought about it and decided against it. She'd probably get tired holding Neptune upside down after the first twenty minutes or so.

Landing on the balcony of the Basilicom, she nodded to White Heart and Green Heart as they transformed back into their human forms and walked inside. "So, either of you have any idea?"

"Not at all." Blanc shook her head. "I really hope it's important, because I was in the middle of an important part of my story. I was just about to get to the climax," she ignored Vert's snickering at that, "and then I get a call that's super urgent?"

"Indeed, I was in the middle of a raid marathon, but if it doesn't take too long, I can put it off for a little bit." Vert smiled before looking around. "Hmm, was this place always this dark? Let me get the light and WOAAAAH!"

"AAAAH!"

"WHAT THE FUCK?!"

There was a crazy laughter and the lights turned on revealing a petite girl with ashen gray skin, green hair and an almost non-existent chest as she grinned at the CPUs, who were all bound, upside down, to the ceiling. "I got you!"

"And you are?" Noire asked as she tried to ignore the fact that her skirt was fluttering up, revealing her panties to this girl who had... Somehow managed to capture them.

"The name's Linda, former front-line member of ASIC and..."

"Oh, right, Underling." All three CPUs said at the same time, causing said Underling to twitch in annoyance.

"You know what? I was going to explain my plan and monologue like a good villain, but I think I'll skip straight to the fun part." Underling growled and pressed a button on her wrist-watch, causing her jacket to explode as more than a dozen mechanical arms and hands erupted out of her back.

"...And what are you doing to do with those?" Vert asked, suddenly a bit nervous.

Underling grinned. "Why... THIS!"

Suddenly the arms reached forward and the hands started rubbing the captive CPUs in various spots all over their bodies.

"BWHA HA HA HA HA HA HA HA HA!" Noire cried out as her arm pits, thighs and abdomen were tickled. "St-aaaahp!"

"HA HA HA HA HA HA HA!" Vert cried out as her butt, belly and arms were tickled.

"STOP STOP STOP!" Blanc cried out while laughing and thrashing as she was tickled all over.

"Hmm, your clothes are all getting in the way, I should take care of that." Underling grinned as the spare hands she had went to work removing the clothes of the CPUs, leaving them in just their underwear while still tickling them. "Yeah! That's better!" She laughed and pulled out a video recorder to record and observe the CPUs as they were thrashing and squirming.

"Stop it! Stop it! Stop it!" Noire cried out while laughing and thrashing. "Oh no! STOP! I!"

Underling grinned as all three CPUs continued to endure her torment. "Yes! Keep going! There's no one who will save you! I already drugged the other idiots and they're all asleep! I'll tickle you until you lose control of your bladder and piss all over yourselves and then I'll upload this online and people will laugh at you."

"You would haaha hahahahaha! not!" Vert cried out as she was tickled.

"Jeeze, your bare tits sure are distracting." Underling grumbled. "Maybe you should try porn, that would be a better use of your time than being a CPU."

"HA HA HA HA HA HA!" Blanc was crying as she thrashed and tried to get away from the hands. "OH NO! STOP! I CAN'T!"

"There's no one who can help you! All your friends are out cold! You're all alone! Now humiliate yourself and BLARGH!" A loud clanging sound was heard and Underling dropped to the floor, causing the hands of the tickle torture machine to stop tickling the CPUs.

Compa looked at everyone. "Are you all okay? Nep Nep wasn't answering her phone so I came over and I heard laughter."

"YES WE'RE FINE! GET ME DOWN! I NEED TO PEE!" Blanc yelled, causing Compa's eyes to widen as she found the ropes that were holding them up and undid them, causing the three nearly naked CPUs to crash to the ground on their heads.

The three didn't wait very long before bolting out of the room to the nearest bathroom.

(-)

Several minutes later...

The CPUs, now dressed, glared at Underling, who was tied to the ceiling in the same way they had been. "So..." Noire began. "You were going to do some really humiliating things to us, huh?"

"Indeed, I do believe she wanted us to soil ourselves from laughing so hard." Vert nodded.

"I say we make her suffer the same treatment." Blanc snarled.

"Now now..." Noire shook her head. "That wouldn't be right." She smirked as Underling sighed in relief. "I do have an appropriate punishment, however."

Underling suddenly paled at the grin on Noire's face.

(-)

"AAAAAAAH!" Underling screamed as she went flying through the air at the end of the rope as Black Heart flew in all sorts of patterns at maximum speed across Gamindustri. "I'M SORRY! STOOOOP!"

"What was that? I can't hear you!"

"STTTTTTTOOOOOOOPPP!"

"Go faster?!" Black Heart's eyes widened as she smiled. "SURE!"

True to her word, Black Heart not only increased her speed, but also did even more complex patterns that would make the world's scariest roller coaster seem like a ride on an escalator.

Not far away, Green Heart and White Heart both watched in satisfaction.

"You know..." White Heart looked at Green Heart. "We never did find out what Neptune wanted from us."

(-)

Back at the Basilicom...

Neptune, having slept through the whole ordeal, was snoring loudly in the living room next to Nepgear and Histoire, both of whom were out cold. "Mmm... Wanna... Snnnzk... Make a big... SNNNZK! Game Festival?"