here's the Miko story with the costume. hope you like it.

Miko Nakadai sighed as she looked at the cake in front of her. Her foster parents were gone, and all the Autobots, save for Ratchet, were back on Cybertron. She was happy their home was capable of supporting life, though it was a little lonely without them. Life was so boring for her now. It was her birthday, and she was alone at home. Her thoughts were interrupted at the sound of her doorbell ringing. She went to the door, and smiled upon seeing Jack Darby holding a pink and blue box.

"Happy Birthday, Miko!" he said, blowing a noisemaker.

"It's great that you're here, Jack," Miko said. "I thought I was gonna be alone on my birthday."

"I didn't have to work, and my mom's working late tonight, so it's alright. What about your folks?"

"Their anniversary. Typical. That's what happens when your foster parents married on the same day you were born."

"I see. Anyway, I got you an awesome present."

He handed Miko the box, and watched her open it. She saw it was an outfit that resembled Airachnid in robot mode. Miko went to her room to try it on. A few minutes later, Miko came down the stairs.

"So, Jack, how do I look?"

Jack looked up, and smirked at Miko. She was wearing black heel boots with black fingerless gloves that went up to her elbows. She had a black metal bra on her front, and a metal backpack with four protrusions like spider legs. She also had the Decepticon symbol on her chest. She also wore metal panties, and a replica of Airachnid's helmet.

"Looks good on you."

Miko smiled at his praise, unaware of what was about to happen. Jack pulled out a weird looking remote, but before Miko could ask what it was, Jack pressed a button, causing a purple visor to come out of the helmet in front of her eyes. It then started to project a spiral image. Miko could only watch with a dazed smile as she got more and more relaxed. Once she finished going under, Jack pressed another button.

"How about coming down those stairs with a sexy walk?"

Miko did as he said, slowly walking down while rolling her hips while her hands were sensually roaming her body. Once she was down the stairs, Jack walked up to her.

"Now, how's about a kiss?"

Miko smiled, and they kissed for a couple minutes before Jack pulled away.

"We're gonna have some fun." Jack took off his pants, revealing his hard cock. "Give me a blowjob."

Miko did as she told, getting down on her hands and knees. She took him in her mouth, making him moan. He came after a few minutes, Miko drinking every last drop. Then Jack had her stand against the wall. He started hotdogging her, and came all over her back after a few minutes. He then had her clean up, take off the suit, and go to bed with no recollection of what happened after Jack pressed the button, causing her to think she passed out from the emotions going through her.

-Later, at the base-

"Hey, Raf," Jack said.

"Hey, Jack," the short boy said. "Did Miko like her gift?"

"Oh, yeah, and then some. The test was a success."

"Great. Soon, we'll have tons of fun."

The boys laughed in victory before heading home.

so, I changed the costume to Airachnid. you'll see why in the sequel. sorry for the sex being short, but Jack can't go too far without risking Miko snapping out of it.